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#1 2025-04-06 13:47:39

spasoff
Member
From: Berlin
Registered: 2023-09-12
Posts: 22

Slow WiFi speed with Realtek MT7922/MT7921e

Hello everyone, I'm in need of help. smile
I just changed my Hardware and first tested it on Windows. Now that I'm back on Linux, I'm experiencing much slower Wi-Fi speeds than on Windows. On Windows, I was able to get download speeds of around 1050-1100Mbps, and on Linux, it's only around 550-600Mbps.
The hardware is an MSI MAG B650 Tomahawk WiFi motherboard, which supposedly has MT7922 or MT7921e, depending on the revision from what I could find on the internet. I'm still not sure which one I have and how to find out since it reports both, but I think the firmware and drivers for both are the same.
I've already turned off the wifi power saving and manually updated the firmware from https://git.kernel.org, but to no surprise, I was already on the latest from 06.11.2024, so it did nothing.
Any help would be appreciated.
Thanks in advance!

❯ iwconfig
lo        no wireless extensions.

enp14s0   no wireless extensions.

wlp15s0   IEEE 802.11  ESSID:"FRITZ!Box 6690 RX"
          Mode:Managed  Frequency:5.2 GHz
          Bit Rate=-2.13367e+06 kb/s   Tx-Power=3 dBm
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=56/70  Signal level=-54 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:1   Missed beacon:0
❯ lspci -k
0f:00.0 Network controller: MEDIATEK Corp. MT7922 802.11ax PCI Express Wireless Network Adapter
        Subsystem: MEDIATEK Corp. MT7922 802.11ax PCI Express Wireless Network Adapter
        Kernel driver in use: mt7921e
        Kernel modules: mt7921e
❯ lshw
  *-network
                      description: Wireless interface
                      product: MT7922 802.11ax PCI Express Wireless Network Adapter
                      vendor: MEDIATEK Corp.
                      physical id: 0
                      bus info: pci@0000:0f:00.0
                      logical name: wlp15s0
                      version: 00
                      width: 64 bits
                      clock: 33MHz
                      capabilities: pciexpress msi pm bus_master cap_list ethernet physical wireless
                      configuration: broadcast=yes driver=mt7921e driverversion=6.12.21-1-lts firmware=____000000-20241106163310 latency=0 link=yes multicast=yes wireless=IEEE 802.11
                      resources: iomemory:fc0-fbf irq:123 memory:fc30000000-fc300fffff memory:f6800000-f6807fff
❯ hwinfo
         mt7921e: /devices/pci0000:00/0000:00:02.1/0000:05:00.0/0000:06:0b.0/0000:0f:00.0
         mt7921e: module = mt7921e

  net interface: name = wlp15s0, path = /class/net/wlp15s0
    type = 1
    carrier = 1
    net device: path = /devices/pci0000:00/0000:00:02.1/0000:05:00.0/0000:06:0b.0/0000:0f:00.0
    net driver: name = mt7921e, path = /bus/pci/drivers/mt7921e

----- kernel log -----
  <6>[    6.924710] mt7921e 0000:0f:00.0: enabling device (0000 -> 0002)
  <6>[    6.929708] mt7921e 0000:0f:00.0: ASIC revision: 79220010
  <6>[    7.006233] mt7921e 0000:0f:00.0: HW/SW Version: 0x8a108a10, Build Time: 20241106163228a
  <6>[    7.006233]
  <6>[    7.008336] kvm_amd: TSC scaling supported
  <6>[    7.008338] kvm_amd: Nested Virtualization enabled
  <6>[    7.008339] kvm_amd: Nested Paging enabled
  <6>[    7.008340] kvm_amd: LBR virtualization supported
  <6>[    7.008341] kvm_amd: Virtual VMLOAD VMSAVE supported
  <6>[    7.008341] kvm_amd: Virtual GIF supported
  <6>[    7.008342] kvm_amd: Virtual NMI enabled
  <6>[    7.019799] Adding 33029116k swap on /dev/nvme0n1p2.  Priority:-2 extents:1 across:33029116k SS
  <6>[    7.020371] mt7921e 0000:0f:00.0: WM Firmware Version: ____000000, Build Time: 20241106163310
  <6>[    7.053353] Bluetooth: hci0: HW/SW Version: 0x008a008a, Build Time: 20241106163512
  <6>[    7.115002] intel_rapl_common: Found RAPL domain package
  <6>[    7.115006] intel_rapl_common: Found RAPL domain core
  <6>[    7.115258] amd_atl: AMD Address Translation Library initialized
  <46>[    7.718094] systemd-journald[429]: Received client request to flush runtime journal.
  <6>[    8.133955] mt7921e 0000:0f:00.0 wlp15s0: renamed from wlan0

54: PCI f00.0: 0282 WLAN controller
  [Created at pci.386]
  SysFS ID: /devices/pci0000:00/0000:00:02.1/0000:05:00.0/0000:06:0b.0/0000:0f:00.0
  SysFS BusID: 0000:0f:00.0
  Hardware Class: network
  Model: "MEDIATEK WLAN controller"
  Vendor: pci 0x14c3 "MEDIATEK Corp."
  Device: pci 0x0616
  SubVendor: pci 0x14c3 "MEDIATEK Corp."
  SubDevice: pci 0x0616
  Driver: "mt7921e"
  Driver Modules: "mt7921e"
  Device File: wlp15s0
  Features: WLAN
  Memory Range: 0xfc30000000-0xfc300fffff (ro,non-prefetchable)
  Memory Range: 0xf6800000-0xf6807fff (rw,non-prefetchable)
  IRQ: 123 (1153473 events)
  Link detected: yes
  WLAN channels: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 36 40 44 48 52 56 60 64 100 104 108 112 116 120 124 128 132 136
  WLAN frequencies: 2.412 2.417 2.422 2.427 2.432 2.437 2.442 2.447 2.452 2.457 2.462 2.467 2.472 2.484 5.18 5.2 5.22 5.24 5.26 5.28 5.3 5.32 5.5 5.52 5.54 5.56 5.58 5.6 5.62 5.64 5.66 5.68
  WLAN encryption modes: WEP40 WEP104 TKIP CCMP
  WLAN authentication modes: open sharedkey wpa-psk wpa-eap
  Module Alias: "pci:v000014C3d00000616sv000014C3sd00000616bc02sc80i00"
  Driver Info #0:
    Driver Status: mt7921e is active
    Driver Activation Cmd: "modprobe mt7921e"
  Config Status: cfg=new, avail=yes, need=no, active=unknown
  Attached to: #63 (PCI bridge)

Last edited by spasoff (2025-04-06 20:48:16)

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#2 2025-04-06 23:47:37

spasoff
Member
From: Berlin
Registered: 2023-09-12
Posts: 22

Re: Slow WiFi speed with Realtek MT7922/MT7921e

Update:
I reinstalled Windows and did some more testing.
There seems to be no huge difference in the connection speed, only in the internet speed. I also noticed about 15% more latency in the measurements while on Linux.
Those are the iperf3 results where the tested machine is connected via WiFi, and the second is connected with an  Ethernet 1GB cable.

as Windows client:

Connecting to host 192.168.178.46, port 5201
[  5] local 192.168.178.20 port 42974 connected to 192.168.178.46 port 5201
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec   106 MBytes   887 Mbits/sec    0   2.09 MBytes
[  5]   1.00-2.00   sec   112 MBytes   938 Mbits/sec    0   2.09 MBytes
[  5]   2.00-3.00   sec   110 MBytes   927 Mbits/sec    0   2.09 MBytes
[  5]   3.00-4.00   sec   112 MBytes   940 Mbits/sec    0   2.45 MBytes
[  5]   4.00-5.00   sec   111 MBytes   933 Mbits/sec    0   2.88 MBytes
[  5]   5.00-6.00   sec   112 MBytes   938 Mbits/sec    0   3.03 MBytes
[  5]   6.00-7.00   sec   113 MBytes   947 Mbits/sec    0   3.19 MBytes
[  5]   7.00-8.00   sec   112 MBytes   941 Mbits/sec    0   3.19 MBytes
[  5]   8.00-9.00   sec   112 MBytes   942 Mbits/sec    0   3.19 MBytes
[  5]   9.00-10.00  sec   111 MBytes   934 Mbits/sec    0   3.19 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec  1.09 GBytes   933 Mbits/sec    0            sender
[  5]   0.00-10.01  sec  1.08 GBytes   931 Mbits/sec                  receiver

as Linux client:

Connecting to host 192.168.178.46, port 5201
[  5] local 192.168.178.20 port 37716 connected to 192.168.178.46 port 5201
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec  98.6 MBytes   826 Mbits/sec    0   3.91 MBytes
[  5]   1.00-2.00   sec  96.2 MBytes   807 Mbits/sec    0   3.91 MBytes
[  5]   2.00-3.00   sec  99.6 MBytes   836 Mbits/sec    0   3.91 MBytes
[  5]   3.00-4.00   sec  97.5 MBytes   818 Mbits/sec    0   3.91 MBytes
[  5]   4.00-5.00   sec   101 MBytes   849 Mbits/sec    0   3.91 MBytes
[  5]   5.00-6.00   sec  97.6 MBytes   819 Mbits/sec    0   3.91 MBytes
[  5]   6.00-7.00   sec  91.2 MBytes   765 Mbits/sec    0   3.91 MBytes
[  5]   7.00-8.00   sec   100 MBytes   840 Mbits/sec    0   3.91 MBytes
[  5]   8.00-9.00   sec  98.4 MBytes   825 Mbits/sec    0   3.91 MBytes
[  5]   9.00-10.00  sec   102 MBytes   852 Mbits/sec    0   3.91 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec   982 MBytes   824 Mbits/sec    0            sender
[  5]   0.00-10.02  sec   982 MBytes   822 Mbits/sec                  receiver

as Windows server:

-----------------------------------------------------------
Server listening on 5201 (test #1)
-----------------------------------------------------------
Accepted connection from 192.168.178.46, port 50060
[  5] local 192.168.178.20 port 5201 connected to 192.168.178.46 port 50061
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-1.00   sec  93.9 MBytes   787 Mbits/sec
[  5]   1.00-2.00   sec   113 MBytes   950 Mbits/sec
[  5]   2.00-3.00   sec   112 MBytes   938 Mbits/sec
[  5]   3.00-4.00   sec   113 MBytes   949 Mbits/sec
[  5]   4.00-5.00   sec   113 MBytes   949 Mbits/sec
[  5]   5.00-6.00   sec   113 MBytes   950 Mbits/sec
[  5]   6.00-7.00   sec   113 MBytes   949 Mbits/sec
[  5]   7.00-8.00   sec   113 MBytes   949 Mbits/sec
[  5]   8.00-9.00   sec   113 MBytes   950 Mbits/sec
[  5]   9.00-10.00  sec   112 MBytes   942 Mbits/sec
[  5]  10.00-10.05  sec  5.00 MBytes   948 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-10.05  sec  1.09 GBytes   931 Mbits/sec                  receiver

as Linux server

-----------------------------------------------------------
Server listening on 5201 (test #2)
-----------------------------------------------------------
Accepted connection from 192.168.178.46, port 58814
[  5] local 192.168.178.20 port 5201 connected to 192.168.178.46 port 58820
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-1.00   sec   104 MBytes   873 Mbits/sec
[  5]   1.00-2.00   sec   112 MBytes   942 Mbits/sec
[  5]   2.00-3.00   sec   112 MBytes   942 Mbits/sec
[  5]   3.00-4.00   sec   112 MBytes   942 Mbits/sec
[  5]   4.00-5.00   sec   112 MBytes   942 Mbits/sec
[  5]   5.00-6.00   sec   112 MBytes   941 Mbits/sec
[  5]   6.00-7.00   sec   112 MBytes   942 Mbits/sec
[  5]   7.00-8.00   sec   112 MBytes   943 Mbits/sec
[  5]   8.00-9.00   sec   112 MBytes   941 Mbits/sec
[  5]   9.00-10.00  sec   112 MBytes   942 Mbits/sec
[  5]  10.00-10.03  sec  3.00 MBytes   969 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-10.03  sec  1.09 GBytes   935 Mbits/sec                  receiver

Last edited by spasoff (2025-04-06 23:48:03)

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#3 2025-04-07 14:54:36

seth
Member
From: Don't DM me only for attention
Registered: 2012-09-03
Posts: 69,190

Re: Slow WiFi speed with Realtek MT7922/MT7921e

There seems to be no huge difference in the connection speed, only in the internet speed.

How do you measure the "internet speed"?
Get ABBS and run the simplified speedtest against a nearby linode server.

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#4 2025-04-07 17:37:24

spasoff
Member
From: Berlin
Registered: 2023-09-12
Posts: 22

Re: Slow WiFi speed with Realtek MT7922/MT7921e

Usually, against different German Ookla servers and T-Telekom servers. Those are the abbs results:

/dev/null                  100%[=====================================>]   1000M  72.0MB/s    in 15s
2025-04-07 21:18:07 URL:http://speedtest.frankfurt.linode.com/1GB-frankfurt.bin [1048576000/1048576000] -> /dev/null [1]

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#5 2025-04-08 07:15:33

seth
Member
From: Don't DM me only for attention
Registered: 2012-09-03
Posts: 69,190

Re: Slow WiFi speed with Realtek MT7922/MT7921e

So 576 Mbit/s what fits your OP.
Since it doesn't seem to affect the LAN connection:
Do you use jumbo frames or a VPN or anything else that might cause the MTU to be a relevant factor causing retransmits?
https://stackoverflow.com/questions/168 … nsmissions

Otherwise your DNS might be a factor?
(Depending on what "latency" means, but it would perhaps show up comparing "ping -n google.com" and "ping google.com")

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#6 2025-04-09 14:58:23

spasoff
Member
From: Berlin
Registered: 2023-09-12
Posts: 22

Re: Slow WiFi speed with Realtek MT7922/MT7921e

I'm using neigher Jumbo Frames, nor VPN. I'm using my ISP DNS but even switching to Google or Cloudflair's DNSes doens't change much. I'm also getting my full 1Gbps with LAN Cable so that's that.
In terms of ping it goes from 16-18ms on Windows to 19-24ms on Linux.
Also did the testing on ASRock B650E PG Riptide WiFi Moatherboard, which has the same WiFi chip, and I installed Fedora to double check, but the results were pretty much the same with the latest firmware.
I will just rule it out as a driver issue.

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#7 2025-04-09 21:03:10

seth
Member
From: Don't DM me only for attention
Registered: 2012-09-03
Posts: 69,190

Re: Slow WiFi speed with Realtek MT7922/MT7921e

In terms of ping it goes from 16-18ms on Windows to 19-24ms on Linux.

But is there a (dsignificant) difference between

ping -n google.com

and

ping google.com

?

I'm also getting my full 1Gbps with LAN Cable so that's that.

So wifi LAN is fast, wifi WAN is slow, wired WAN is fast.
On arch, fedora and different firmwares on the same chip, but not windows.
Correct recap?
On top of that the iperf3 server performance between windows and linux is pretty much the same, but the client performance has a 12% difference.

"mt7921e.disable_aspm=Y", https://wiki.archlinux.org/title/Kernel_parameters
The theory would be that the slightly slower traffic allows the chip to fall asleep, causing more overhead to wake it up.
It's certainly /a/ "theory" … that I'll buy when I see the results hmm

Cloudflair's

smile

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#8 2025-04-11 20:13:57

spasoff
Member
From: Berlin
Registered: 2023-09-12
Posts: 22

Re: Slow WiFi speed with Realtek MT7922/MT7921e

Yes, you are correct!
This testing is done on CachyOS since I didn't want to go through the whole setup once again, but it should be the same.
There is was no measurable difference between

ping

and

ping -n

Also, using the

mt7921e.disable_aspm=Y
cachyos-matix kernel: mt7921e 0000:0f:00.0: enabling device (0000 -> 0002)
cachyos-matix kernel: mt7921e 0000:0f:00.0: disabling ASPM L1

yields the same result both for ping and wireless internet speeds.

Last edited by spasoff (2025-04-11 20:15:06)

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#9 2025-04-11 21:18:11

seth
Member
From: Don't DM me only for attention
Registered: 2012-09-03
Posts: 69,190

Re: Slow WiFi speed with Realtek MT7922/MT7921e

Keep in mind that

LAN is fast, wifi WAN is slow, wired WAN is fast. On arch, fedora and different firmwares on the same chip, but not windows.

is either a fluke or completely nuts…

That being said, are you using networkmanager to establish  the connection on arch/cachy & fedora?
What if you don't and connect w/ wpa_supplicant or iwd manually (and then obtain a lease w/ eg. dhcpcd since wpa_supplicant cannot do that)
For a quick and easy test, use wifi-menu from the netctl package.

(I want to get NMs scanning and MAC spoofing habits out of this, though even ifff that triggers any half-duplex conditions - why not in the LAN?)

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#10 2025-04-14 20:30:25

spasoff
Member
From: Berlin
Registered: 2023-09-12
Posts: 22

Re: Slow WiFi speed with Realtek MT7922/MT7921e

Using only iwd from an Arch ISO gives me the same 70-ish MB/s result using the  ABBS and ookla-speedtest-bin on both systems. hmm
This time, I tested iperf3 while both systems were booted from Arch ISO and connected to WLAN using the iw daemon.


root@archiso ~ # lshw
archiso
    description: Desktop Computer
    product: MS-7D75 (To be filled by O.E.M.)
    vendor: Micro-Star International Co., Ltd.
    version: 1.0
    serial: To be filled by O.E.M.
    width: 64 bits
    capabilities: smbios-3.7.0 dmi-3.7.0 smp vsyscall32
    configuration: boot=normal chassis=desktop family=To be filled by O.E.M. sku=To be filled by O.E.M. uuid=08c88ed8-c248-9714-a74c-345a6040d83f
  *-core
       description: Motherboard
       product: MAG B650 TOMAHAWK WIFI (MS-7D75)
       vendor: Micro-Star International Co., Ltd.
       physical id: 0
       version: 1.0
       serial: 07D7511_OB1E234638
       slot: To be filled by O.E.M.
     *-firmware
          description: BIOS
          vendor: American Megatrends International, LLC.
          physical id: 0
          version: 1.K0
          date: 10/08/2024
          size: 64KiB
          capacity: 32MiB
          capabilities: pci upgrade shadowing cdboot bootselect socketedrom edd int13floppynec int13floppytoshiba int13floppy360 int13floppy1200 int13floppy720 int13floppy2880 int5printscreen

                 *-network
                      description: Ethernet interface
                      product: RTL8125 2.5GbE Controller
                      vendor: Realtek Semiconductor Co., Ltd.
                      physical id: 0
                      bus info: pci@0000:0e:00.0
                      logical name: enp14s0
                      version: 05
                      capacity: 2500Mbit/s
                      width: 64 bits
                      clock: 33MHz
                      capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd 2500bt-fd autonegotiation
                      configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=6.13.8-arch1-1 firmware=rtl8125b-2_0.0.2 07/13/20 latency=0 link=no multicast=yes port=twisted pair

                 *-network
                      description: Wireless interface
                      product: MT7922 802.11ax PCI Express Wireless Network Adapter
                      vendor: MEDIATEK Corp.
                      physical id: 0
                      bus info: pci@0000:0f:00.0
                      logical name: wlan0
                      version: 00
                      width: 64 bits
                      clock: 33MHz
                      capabilities: pciexpress msi pm bus_master cap_list ethernet physical wireless
                      configuration: broadcast=yes driver=mt7921e driverversion=6.13.8-arch1-1 firmware=____000000-20241106163310 ip=192.168.178.53 latency=0 link=yes multicast=yes wireless=IEEE 802.11
root@archiso ~ # lshw
archiso
    description: Desktop Computer
    product: B650E PG Riptide WiFi (Default string)
    vendor: ASRock
    version: Default string
    serial: Default string
    width: 64 bits
    capabilities: smbios-3.4.0 dmi-3.4.0 smp vsyscall32
    configuration: boot=normal chassis=desktop family=Default string sku=Default string
  *-core
       description: Motherboard
       product: B650E PG Riptide WiFi
       vendor: ASRock
       physical id: 0
       version: Default string
       serial: M80-G8005000198
       slot: Default string
     *-firmware
          description: BIOS
          vendor: American Megatrends International, LLC.
          physical id: 0
          version: 1.21
          date: 04/26/2023
          size: 64KiB
          capacity: 32MiB
          capabilities: pci upgrade shadowing cdboot bootselect socketedrom edd int13floppynec int13floppytoshiba int13floppy360 int13floppy1200 int13floppy720 int13floppy2880 int5printscreen int14serial int17printer int10video usb biosbootspecification uefi

                 *-network
                      description: Ethernet interface
                      product: Killer E3000 2.5GbE Controller
                      vendor: Realtek Semiconductor Co., Ltd.
                      physical id: 0
                      bus info: pci@0000:0d:00.0
                      logical name: enp13s0
                      version: 06
                      size: 1Gbit/s
                      capacity: 2500Mbit/s
                      width: 64 bits
                      clock: 33MHz
                      capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt-fd 2500bt-fd autonegotiation
                      configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=6.13.8-arch1-1 duplex=full firmware=rtl8125b-2_0.0.2 07/13/20 ip=192.168.178.54 latency=0 link=yes multicast=yes port=twisted pair speed=1Gbit/s
                      resources: irq:38 ioport:c000(size=256) memory:fc500000-fc50ffff memory:fc510000-fc513fff

                *-network
                      description: Wireless interface
                      product: MT7921K (RZ608) Wi-Fi 6E 80MHz
                      vendor: MEDIATEK Corp.
                      physical id: 0
                      bus info: pci@0000:0c:00.0
                      logical name: wlan0
                      version: 00
                      width: 64 bits
                      clock: 33MHz
                      capabilities: pciexpress msi pm bus_master cap_list ethernet physical wireless
                      configuration: broadcast=yes driver=mt7921e driverversion=6.13.8-arch1-1 firmware=____010000-20241106151045 ip=192.168.178.55 latency=0 link=yes multicast=yes wireless=IEEE 802.11
                      resources: irq:105 memory:fc100000-fc1fffff memory:fc200000-fc203fff memory:fc204000-fc204fff
1 root@archiso ~ # iperf3 -c 192.168.178.55
Connecting to host 192.168.178.55, port 5201
[  5] local 192.168.178.53 port 56136 connected to 192.168.178.55 port 5201
[ ID] Interval           Transfer     Bitrate         Retr  Cwnd
[  5]   0.00-1.00   sec   110 MBytes   924 Mbits/sec    0   4.05 MBytes
[  5]   1.00-2.00   sec   112 MBytes   937 Mbits/sec    0   4.05 MBytes
[  5]   2.00-3.00   sec   112 MBytes   941 Mbits/sec    0   4.05 MBytes
[  5]   3.00-4.00   sec   112 MBytes   944 Mbits/sec    0   4.05 MBytes
[  5]   4.00-5.00   sec   112 MBytes   935 Mbits/sec    0   4.05 MBytes
[  5]   5.00-6.00   sec   113 MBytes   944 Mbits/sec    0   4.05 MBytes
[  5]   6.00-7.00   sec   112 MBytes   938 Mbits/sec    0   4.05 MBytes
[  5]   7.00-8.00   sec   112 MBytes   935 Mbits/sec    0   4.05 MBytes
[  5]   8.00-9.00   sec   112 MBytes   943 Mbits/sec    0   4.05 MBytes
[  5]   9.00-10.00  sec   112 MBytes   941 Mbits/sec    0   4.05 MBytes
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate         Retr
[  5]   0.00-10.00  sec  1.09 GBytes   938 Mbits/sec    0            sender
[  5]   0.00-10.03  sec  1.09 GBytes   935 Mbits/sec                  receiver

iperf Done.
root@archiso ~ # iperf3 -s
-----------------------------------------------------------
Server listening on 5201 (test #1)
-----------------------------------------------------------
Accepted connection from 192.168.178.54, port 60416
[  5] local 192.168.178.53 port 5201 connected to 192.168.178.54 port 60432
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-1.00   sec  68.5 MBytes   574 Mbits/sec
[  5]   1.00-2.00   sec  89.1 MBytes   747 Mbits/sec
[  5]   2.00-3.00   sec  86.8 MBytes   728 Mbits/sec
[  5]   3.00-4.00   sec  87.6 MBytes   735 Mbits/sec
[  5]   4.00-5.00   sec  88.5 MBytes   742 Mbits/sec
[  5]   5.00-6.00   sec  86.9 MBytes   729 Mbits/sec
[  5]   6.00-7.00   sec  90.0 MBytes   755 Mbits/sec
[  5]   7.00-8.00   sec  88.1 MBytes   740 Mbits/sec
[  5]   8.00-9.00   sec  91.1 MBytes   764 Mbits/sec
[  5]   9.00-10.00  sec  90.8 MBytes   761 Mbits/sec
[  5]  10.00-10.04  sec  2.25 MBytes   484 Mbits/sec
- - - - - - - - - - - - - - - - - - - - - - - - -
[ ID] Interval           Transfer     Bitrate
[  5]   0.00-10.04  sec   870 MBytes   727 Mbits/sec                  receiver

Think I will just order an AX210 for 12€ and call it a day. It most likely has something to do with the Mediatek's chip firmware.
I'm also seeing a random spike in the ping while gaming on Linux, jumping from mid-20s to 100+ every few minutes for a few seconds that is not present on Windows.
The funny thing is that I had it in my other build for over a year (MT7921K, not the MT7922, but they seem to behave the same) but never bothered to test the Wi-Fi since I didn't need it, and the Bluetooth is actually rock solid.
Thanks for the time and the help!

Last edited by spasoff (2025-04-14 20:30:59)

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#11 2025-04-15 03:37:38

spasoff
Member
From: Berlin
Registered: 2023-09-12
Posts: 22

Re: Slow WiFi speed with Realtek MT7922/MT7921e

OK. Another update that may help people in my situation if they stumble upon this post.
After some more research, I ended up on this Reddit post where people were having the same ping spikes even on Windows. The solution was to turn off Roaming Aggressiveness for the WiFi network adapter in Windows, so on Linux, I tried first to lower the sensitivity to -70dB, which ended with

Error for wireless request "Set Sensitivity" (8B08) :
    SET failed on device wlan0 ; Operation not supported.

After the error, I decided to just lock the network to a single BSSID, which would prevent roaming.
The interesting part is that the 5Ghz network only allows me to use the 40(5,200 MHz) channel. If I pick any other channel from 7(5,035 Mhz) to 196(4,980 Mhz) range, results in me not being able to connect to the WAN.
even tho they are well supported by the device:

 ❯ sudo iw phy
        Band 2:
               Frequencies:
                        * 5180.0 MHz [36] (23.0 dBm)
                        * 5200.0 MHz [40] (23.0 dBm)
                        * 5220.0 MHz [44] (23.0 dBm)
                        * 5240.0 MHz [48] (23.0 dBm)
                        * 5260.0 MHz [52] (20.0 dBm) (radar detection)
                        * 5280.0 MHz [56] (20.0 dBm) (radar detection)
                        * 5300.0 MHz [60] (20.0 dBm) (radar detection)
                        * 5320.0 MHz [64] (20.0 dBm) (radar detection)
                        * 5500.0 MHz [100] (26.0 dBm) (radar detection)
                        * 5520.0 MHz [104] (26.0 dBm) (radar detection)
                        * 5540.0 MHz [108] (26.0 dBm) (radar detection)
                        * 5560.0 MHz [112] (26.0 dBm) (radar detection)
                        * 5580.0 MHz [116] (26.0 dBm) (radar detection)
                        * 5600.0 MHz [120] (26.0 dBm) (radar detection)
                        * 5620.0 MHz [124] (26.0 dBm) (radar detection)
                        * 5640.0 MHz [128] (26.0 dBm) (radar detection)
                        * 5660.0 MHz [132] (26.0 dBm) (radar detection)
                        * 5680.0 MHz [136] (26.0 dBm) (radar detection)
                        * 5700.0 MHz [140] (26.0 dBm) (radar detection)
                        * 5720.0 MHz [144] (13.0 dBm) (radar detection)
                        * 5745.0 MHz [149] (13.0 dBm)
                        * 5765.0 MHz [153] (13.0 dBm)
                        * 5785.0 MHz [157] (13.0 dBm)
                        * 5805.0 MHz [161] (13.0 dBm)
                        * 5825.0 MHz [165] (13.0 dBm)
                        * 5845.0 MHz [169] (disabled)
                        * 5865.0 MHz [173] (disabled)
                        * 5885.0 MHz [177] (disabled)
        Band 4:
                Frequencies:
                        * 5955.0 MHz [1] (23.0 dBm)
                        * 5975.0 MHz [5] (23.0 dBm)
                        * 5995.0 MHz [9] (23.0 dBm)
                        * 6015.0 MHz [13] (23.0 dBm)
                        * 6035.0 MHz [17] (23.0 dBm)
                        * 6055.0 MHz [21] (23.0 dBm)
                        * 6075.0 MHz [25] (23.0 dBm)
                        * 6095.0 MHz [29] (23.0 dBm)
                        * 6115.0 MHz [33] (23.0 dBm)
                        * 6135.0 MHz [37] (23.0 dBm)
                        * 6155.0 MHz [41] (23.0 dBm)
                        * 6175.0 MHz [45] (23.0 dBm)
                        * 6195.0 MHz [49] (23.0 dBm)
                        * 6215.0 MHz [53] (23.0 dBm)
                        * 6235.0 MHz [57] (23.0 dBm)
                        * 6255.0 MHz [61] (23.0 dBm)
                        * 6275.0 MHz [65] (23.0 dBm)
                        * 6295.0 MHz [69] (23.0 dBm)
                        * 6315.0 MHz [73] (23.0 dBm)
                        * 6335.0 MHz [77] (23.0 dBm)
                        * 6355.0 MHz [81] (23.0 dBm)
                        * 6375.0 MHz [85] (23.0 dBm)
                        * 6395.0 MHz [89] (23.0 dBm)
                        * 6415.0 MHz [93] (23.0 dBm)
                        * 6435.0 MHz [97] (disabled)
                        * 6455.0 MHz [101] (disabled)
                        * 6475.0 MHz [105] (disabled)
                        * 6495.0 MHz [109] (disabled)
                        * 6515.0 MHz [113] (disabled)
                        * 6535.0 MHz [117] (disabled)
                        * 6555.0 MHz [121] (disabled)
                        * 6575.0 MHz [125] (disabled)
                        * 6595.0 MHz [129] (disabled)
                        * 6615.0 MHz [133] (disabled)
                        * 6635.0 MHz [137] (disabled)
                        * 6655.0 MHz [141] (disabled)
                        * 6675.0 MHz [145] (disabled)
                        * 6695.0 MHz [149] (disabled)
                        * 6715.0 MHz [153] (disabled)
                        * 6735.0 MHz [157] (disabled)
                        * 6755.0 MHz [161] (disabled)
                        * 6775.0 MHz [165] (disabled)
                        * 6795.0 MHz [169] (disabled)
                        * 6815.0 MHz [173] (disabled)
                        * 6835.0 MHz [177] (disabled)
                        * 6855.0 MHz [181] (disabled)
                        * 6875.0 MHz [185] (disabled)
                        * 6895.0 MHz [189] (disabled)
                        * 6915.0 MHz [193] (disabled)
                        * 6935.0 MHz [197] (disabled)
                        * 6955.0 MHz [201] (disabled)
                        * 6975.0 MHz [205] (disabled)
                        * 6995.0 MHz [209] (disabled)
                        * 7015.0 MHz [213] (disabled)
                        * 7035.0 MHz [217] (disabled)
                        * 7055.0 MHz [221] (disabled)
                        * 7075.0 MHz [225] (disabled)
                        * 7095.0 MHz [229] (disabled)
                        * 7115.0 MHz [233] (disabled)
 ❯ iwconfig
lo        no wireless extensions.

enp14s0   no wireless extensions.

wlan0     IEEE 802.11  ESSID:"FRITZ!Box 6690 RX"
          Mode:Managed  Frequency:5.2 GHz  Access Point: XX:XX:XX:XX:XX:XX
          Bit Rate=-1.89307e+06 kb/s   Tx-Power=3 dBm
          Retry short limit:7   RTS thr:off   Fragment thr:off
          Power Management:on
          Link Quality=56/70  Signal level=-54 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0
 ❯ iw dev wlan0 link;
Connected to XX:XX:XX:XX:XX:XX (on wlan0)
        SSID: FRITZ!Box 6690 RX
        freq: 5200.0
        RX: 1144627473 bytes (785353 packets)
        TX: 117008557 bytes (201145 packets)
        signal: -54 dBm
        rx bitrate: 1152.8 MBit/s 160MHz HE-MCS 5 HE-NSS 2 HE-GI 0 HE-DCM 0
        tx bitrate: 2401.9 MBit/s 160MHz HE-MCS 11 HE-NSS 2 HE-GI 0 HE-DCM 0
        bss flags: short-slot-time
        dtim period: 1
        beacon int: 100

From my understanding, since we can only use one 20Mhz width channel, we can only get a theoretical maximum speed of 573.5 Mbps, which is what I'm getting on both of my machines with this wifi adapter. That doesn't explain the iperf3 measurements, but it explains everything else.

20 MHz Channel on Channel 40 – Max Speed by Wi-Fi Standard
Wi-Fi    Max PHY Rate (1 stream)	2 Streams	4 Streams	Notes
Wi-Fi 4 (802.11n)     72.2 Mbps	144.4 Mbps	~300 Mbps	Uses MIMO
Wi-Fi 5 (802.11ac)    86.7 Mbps	173.3 Mbps	346.6 Mbps	Only on 5 GHz
Wi-Fi 6 (802.11ax)   143.4 Mbps	286.8 Mbps	573.5 Mbps	Uses OFDMA, 1024-QAM

The good news is that locking the BSS identifier stopped the lag spikes and, overall, resulted in a more stable ping, even tho still a few ms higher than Windows. The bad news is that the internet speeds are still low, but 500Mbps+ is still plenty for day-to-day use.

Last edited by spasoff (2025-04-15 03:39:32)

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#12 2025-04-15 06:20:59

seth
Member
From: Don't DM me only for attention
Registered: 2012-09-03
Posts: 69,190

Re: Slow WiFi speed with Realtek MT7922/MT7921e

https://wiki.archlinux.org/title/Iwd#iwd_keeps_roaming
https://wiki.archlinux.org/title/Wpa_supplicant#Roaming

https://en.wikipedia.org/wiki/List_of_W … /ac/ax/be)

If I pick any other channel from 7(5,035 Mhz) to 196(4,980 Mhz) range, results in me not being able to connect to the WAN.
even tho they are well supported by the device:

but what channel(s) is(are) configured in your router?

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#13 2025-04-15 12:32:29

spasoff
Member
From: Berlin
Registered: 2023-09-12
Posts: 22

Re: Slow WiFi speed with Realtek MT7922/MT7921e

seth wrote:

but what channel(s) is(are) configured in your router?

You're absolutely right. Apparently, my router uses channel 40 by default.
I can change and connect to other channels, but the Internet speed, in the best case, stays the same.
It was 3 AM down the rabbit hole, and I thought I had figured it out. neutral

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#14 2025-04-15 14:25:28

seth
Member
From: Don't DM me only for attention
Registered: 2012-09-03
Posts: 69,190

Re: Slow WiFi speed with Realtek MT7922/MT7921e

seth wrote:

Keep in mind that

LAN is fast, wifi WAN is slow, wired WAN is fast. On arch, fedora and different firmwares on the same chip, but not windows.

is either a fluke or completely nuts…

If it was the channel or roaming or anything like this, you'd not see decent WiFi LAN
DNS or Firewall or the discrimination has to happen in the router - any MAC based QoS quotas etc?

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#15 2025-04-15 15:33:05

spasoff
Member
From: Berlin
Registered: 2023-09-12
Posts: 22

Re: Slow WiFi speed with Realtek MT7922/MT7921e

seth wrote:

If it was the channel or roaming or anything like this, you'd not see decent WiFi LAN
DNS or Firewall or the discrimination has to happen in the router - any MAC based QoS quotas etc?

Nope. It would've shown under Windows as well.

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#16 2025-04-15 19:51:27

seth
Member
From: Don't DM me only for attention
Registered: 2012-09-03
Posts: 69,190

Re: Slow WiFi speed with Realtek MT7922/MT7921e

Using DUID or ClientID on DHCP might make a difference there, but if you didn't setup anything like this, it's rather also not there by default (except if maybe the router offers some guest mode and you're accidentally associating with that from linux but use the regular AP from windows?)

About DNS:

wget -O /dev/null http://139.162.130.8/1GB-frankfurt.bin

?

Edit: and did you try to lower the MTU just because we're running out of straws to grasp for?

Last edited by seth (2025-04-15 19:52:07)

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#17 2025-04-16 13:26:55

spasoff
Member
From: Berlin
Registered: 2023-09-12
Posts: 22

Re: Slow WiFi speed with Realtek MT7922/MT7921e

seth wrote:

About DNS:

wget -O /dev/null http://139.162.130.8/1GB-frankfurt.bin

?

❯ as root   wget -O /dev/null http://139.162.130.8/1GB-frankfurt.bin
--2025-04-16 14:50:33--  http://139.162.130.8/1GB-frankfurt.bin
Connecting to 139.162.130.8:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 1048576000 (1000M) [application/octet-stream]
Saving to: ‘/dev/null’

/dev/null                                                       100%[======================================================================================================================================================>]   1000M  74,6MB/s    in 16s

2025-04-16 14:50:48 (64,1 MB/s) - ‘/dev/null’ saved [1048576000/1048576000]

❯ ./abbs net speed

1) Newark, USA                       3) London, UK                       5) Dallas, USA                      7) Sidney, Australia                9) 東京都 (Tokyo), 日本国 (Japan)  11) Fremont, USA
2) Singapore                         4) Frankfurt, Deutschland           6) Toronto, Canada                  8) Atlanta, USA                    10) मुंबई (Bombay), Bhārat (India)

Enter location: 3

1) 100MB
2) 1GB

Select size: 2

/dev/null                                                       100%[======================================================================================================================================================>]   1000M  73,7MB/s    in 16s
2025-04-16 14:25:20 URL:http://speedtest.frankfurt.linode.com/1GB-frankfurt.bin [1048576000/1048576000] -> "/dev/null" [1]
seth wrote:

Edit: and did you try to lower the MTU just because we're running out of straws to grasp for?

I can only change the range from 1280 to 2000, with 1500 being the default, but there is no difference there.

What is more interesting is that using the Ookla CLI from the AUR gives me a much higher speeds than what I can get while measuring against the same server using Firefox, Chromium.
Abbs, and Steam downloads are also slower than what I get from Ookla CLI and similar to the web browser results. And it is consistent.
5I0jx2o.png
O7C35Mw.png
ws6GgtC.png

for comparison this is the connection over lan

 ❯ speedtest

   Speedtest by Ookla

      Server: Internetnord GmbH - Berlin (id: 49516)
         ISP: TeleColumbus
Idle Latency:    15.13 ms   (jitter: 0.59ms, low: 14.60ms, high: 15.49ms)
    Download:  1050.33 Mbps (data used: 1.0 GB)
                 32.13 ms   (jitter: 2.52ms, low: 9.96ms, high: 47.86ms)
      Upload:    52.23 Mbps (data used: 39.1 MB)
                  6.87 ms   (jitter: 1.36ms, low: 4.68ms, high: 14.05ms)
 Packet Loss:     0.0%

                                                                                                                                                                                                                                                     took 16s
 ❯ wget -O /dev/null http://139.162.130.8/1GB-frankfurt.bin
--2025-04-16 14:47:28--  http://139.162.130.8/1GB-frankfurt.bin
Connecting to 139.162.130.8:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 1048576000 (1000M) [application/octet-stream]
Saving to: ‘/dev/null’

/dev/null                                                       100%[======================================================================================================================================================>]   1000M  66,6MB/s    in 27s

2025-04-16 14:47:55 (37,1 MB/s) - ‘/dev/null’ saved [1048576000/1048576000]

and those are the speeds I'm geting with the same NIC on Windows
YpbezNw.png
upOXNoB.png

Last edited by spasoff (2025-04-16 13:46:34)

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#18 2025-04-16 14:49:07

seth
Member
From: Don't DM me only for attention
Registered: 2012-09-03
Posts: 69,190

Re: Slow WiFi speed with Realtek MT7922/MT7921e

How fast can you download http://speedtest.frankfurt.linode.com/1GB-frankfurt.bin on windows/wifi using eg. wget for windows or your browser?
How fast can you download the file using https://archlinux.org/packages/extra/x86_64/axel/ and multiple connections (are two faster than one?)
I start to suspect some cheating here…

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#19 2025-04-16 14:57:43

spasoff
Member
From: Berlin
Registered: 2023-09-12
Posts: 22

Re: Slow WiFi speed with Realtek MT7922/MT7921e

seth wrote:

How fast can you download http://speedtest.frankfurt.linode.com/1GB-frankfurt.bin on windows/wifi using eg. wget for windows or your browser?
How fast can you download the file using https://archlinux.org/packages/extra/x86_64/axel/ and multiple connections (are two faster than one?)
I start to suspect some cheating here…

axel http://speedtest.frankfurt.linode.com/1GB-frankfurt.bin -o 1GB-frankfurt.bin
Initializing download: http://speedtest.frankfurt.linode.com/1GB-frankfurt.bin
File size: 1000 Megabyte(s) (1048576000 bytes)
Opening output file 1GB-frankfurt.bin
Starting download

Connection 3 finished
Connection 2 finished
Connection 2 finished
Connection 0 finished
Connection 3 finished
Connection 0 finished
Connection 2 finished
Connection 3 finished
Connection 1 finished
Connection 0 finished
Connection 2 finished
Connection 1 finished
Connection 3 finished
Connection 0 finished
Connection 2 finished
Connection 3 finished
Connection 1 finished
Connection 0 finished
[100%] [.................................................................................................................................................................................................................................] [  66,8MB/s] [00:00]

Downloaded 1000 Megabyte(s) in 14 second(s). (68446,00 KB/s)

axel http://speedtest.frankfurt.linode.com/1GB-frankfurt.bin -o 1GB-frankfurt_2.bin
Initializing download: http://speedtest.frankfurt.linode.com/1GB-frankfurt.bin
File size: 1000 Megabyte(s) (1048576000 bytes)
Opening output file 1GB-frankfurt_2.bin
Starting download

Connection 3 finished
Connection 2 finished
Connection 3 finished
Connection 2 finished
Connection 0 finished
Connection 3 finished
Connection 1 finished
Connection 2 finished
Connection 1 finished
Connection 2 finished
Connection 3 finished
Connection 0 finished
Connection 2 finished
Connection 1 finished
Connection 3 finished
[100%] [.................................................................................................................................................................................................................................] [  68,6MB/s] [00:00]

Downloaded 1000 Megabyte(s) in 14 second(s). (70265,96 KB/s)

I'm failing to use wget on Windows. The built-in Windows binary just shows this and the "Number of bytes written" just goes up

Windows PowerShell
Copyright (C) Microsoft Corporation. All rights reserved.
                                                                                                                         Writing web request                                                                                                        Writing request stream... (Number of bytes written: 215080542)                                                                                                                                                                              PS C:\Users\matix\Downloads> wget http://speedtest.frankfurt.linode.com/1GB-frankfurt.bin -o test_2 -v
VERBOSE: GET with 0-byte payload
VERBOSE: received 1048576000-byte response of content type application/octet-stream

And downloading it from doesn't show the speed:

Windows PowerShell
Copyright (C) Microsoft Corporation. All rights reserved.
                                                                                                                         Writing web request                                                                                                        Writing request stream... (Number of bytes written: 215080542)                                                                                                                                                                              PS C:\Users\matix\Downloads> wget http://speedtest.frankfurt.linode.com/1GB-frankfurt.bin -o test_2 -v
VERBOSE: GET with 0-byte payload
VERBOSE: received 1048576000-byte response of content type application/octet-stream

Copyright (C) Microsoft Corporation. All rights reserved.
                                                                                                                        Install the latest PowerShell for new features and improvements! [url]https://aka.ms/PSWindows[/url]                                                                                                                                                       PS C:\Users\matix> cd .\Downloads\                                                                                      PS C:\Users\matix\Downloads> wget [url]http://speedtest.frankfurt.linode.com/1GB-frankfurt.bin[/url] -o test_2 -v
VERBOSE: GET with 0-byte payload
VERBOSE: received 1048576000-byte response of content type application/octet-stream
PS C:\Users\matix\Downloads> .\wget.exe  [url]http://speedtest.frankfurt.linode.com/1GB-frankfurt.bin[/url] -o test.bin -v
PS C:\Users\matix\Downloads> dir


    Directory: C:\Users\matix\Downloads


Mode                 LastWriteTime         Length Name
----                 -------------         ------ ----
d-----         3/27/2025   2:21 AM                Cinebench2024_win_x86_64
d-----         3/27/2025   3:07 PM                dlssg-to-fsr3-0.130-738-0-130-1742150748
d-----         3/27/2025   3:16 PM                fakenvapi
d-----          4/6/2025  11:24 PM                iperf3.18_64
d-----          4/2/2025   8:52 PM                mpv-x86_64-v3-20250402-git-36ea235
d-----         3/27/2025   3:17 PM                OptiScaler
d-----         3/27/2025  12:32 AM                p95
d-----         4/16/2025   3:03 PM                wget-1.11.4-1-bin
d-----         4/16/2025   3:12 PM                wget2-latest
-a----         4/16/2025   3:02 PM      185340542 1GB-frankfurt.bin
-a----         3/30/2022   3:32 PM     1048576000 1GB-frankfurt.bin.1
-a----         3/30/2022   3:32 PM     1048576000 1GB-frankfurt.bin.2
-a----         3/30/2022   3:32 PM     1048576000 1GB-frankfurt.bin.3
-a----         3/30/2022   3:32 PM     1048576000 1GB-frankfurt.bin.4
-a----         3/27/2025   3:07 PM        1075990 dlssg-to-fsr3-0.130-738-0-130-1742150748.zip
-a----         3/27/2025   3:16 PM         170867 fakenvapi.7z
-a----         3/31/2025   2:36 PM          24090 label.pdf
-a----         4/16/2025   9:24 AM        3478312 LatencyMon.exe
-a----         3/26/2025  10:32 PM          24046 OCCT.config.json
-a----         3/26/2025  10:21 PM      227178120 OCCT.exe
-a----         3/27/2025   1:12 PM       31105842 OptiScaler_v0.7.7-pre7_20250327.7z
-a----         4/16/2025   3:16 PM        1582991 test.bin
-a----         4/16/2025   3:15 PM      239260542 test_2
-a----         3/26/2025  10:35 PM     1339177360 Unigine_Superposition-1.1.exe
-a----         4/16/2025   3:10 PM         850448 wget-1.11.4-1-bin (1).zip
-a----         4/16/2025   3:03 PM         850448 wget-1.11.4-1-bin.zip
-a----         4/16/2025   3:05 PM        7046072 wget.exe
-a----         4/16/2025   3:12 PM        4094789 wget2-latest.tar.gz

Last edited by spasoff (2025-04-16 15:21:48)

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#20 2025-04-16 15:17:46

seth
Member
From: Don't DM me only for attention
Registered: 2012-09-03
Posts: 69,190

Re: Slow WiFi speed with Realtek MT7922/MT7921e

So multiple connections don't help, try to download that file on windows to see whether the ookla test gets benefits…

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#21 2025-04-16 15:30:56

spasoff
Member
From: Berlin
Registered: 2023-09-12
Posts: 22

Re: Slow WiFi speed with Realtek MT7922/MT7921e

seth wrote:

So multiple connections don't help, try to download that file on Windows to see whether the Ookla test gets benefits…

Updated the previous post.
Not sure how to get the download speed using wget on Windows, but via the browser, it downloaded with around 70-90MB/s the first few times, now the speed has been throttled down to around 20MB/s after some retries.
The thing is that it's only 1GB and it downloads really fast, so not sure if that's the max speed it can achieve. The speed via Chrome hasn't changed.
N8xS4il.png

Edit: I think I wasted enough of your time, for which I'm very thankful, and I really don't want to bother you further. I will just accept the result and call it a day.

Last edited by spasoff (2025-04-16 15:37:12)

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#22 2025-04-16 16:10:31

seth
Member
From: Don't DM me only for attention
Registered: 2012-09-03
Posts: 69,190

Re: Slow WiFi speed with Realtek MT7922/MT7921e

http://speedtest.frankfurt.linode.com/

Fwwi, I'm doing this to entertain my curiosity - it's an interesting scenario.
So don't worry about wasting my time.

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