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#1 2025-07-19 02:10:12

archexplorer
Member
Registered: 2024-12-19
Posts: 7

Cannot get steam to download past 150Mbps

I've ran into this problem numerous times in all sorts of linux distributions, including archlinux, where Steam would download slowly, until you'd put a file /home/*USER*/.steam/steam/steam_dev.cfg with the file contents:

@nClientDownloadEnableHTTP2PlatformLinux 0
@fDownloadRateImprovementToAddAnotherConnection 1.0
@cMaxInitialDownloadSources 15

This usually always worked for me - until this install.

I've played around, trying combinations of the above 3 lines, to no avail.

I did some more digging and I found this on the steam fourm: https://steamcommunity.com/app/221410/d … 4934496350

I use an openwrt router, and first set the MTU of my WAN to 1478. When that didn't help, I also set the MTU of my LAN to 1478, and again, nothing. I didn't see how to set the MRU in openwrt - looking into this, I found maybe MTU and MRU are the same thing?

Digging even further, I found this https://gist.github.com/FikriRNurhidaya … id=4690793 and I did the following:

I added this to my /etc/dnsmasq.conf:
no-resolv
server=1.1.1.1
listen-address=127.0.0.1
port=0

restarted dnsmasq and restarted networkmanager

didn't help

i disabled IPv6 in network manager

again, didn't help.

I've come to you lovely fourm members to see if there's something I wouldn't know about that I'm missing. Thanks for any help!

Last edited by archexplorer (2025-07-19 02:11:51)

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#2 2025-07-19 02:11:05

archexplorer
Member
Registered: 2024-12-19
Posts: 7

Re: Cannot get steam to download past 150Mbps

I didn't see how to set the MRU in openwrt

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#3 2025-07-19 07:58:24

seth
Member
From: Don't DM me only for attention
Registered: 2012-09-03
Posts: 69,056

Re: Cannot get steam to download past 150Mbps

I found maybe MTU and MRU are the same thing?

Looking down on a qwertz/y keyboard, I'd assume a typo.

would download slowly …  150Mbps

For how long have you tried this? (Might just be the server being overloaded)
Can you get normal/better speeds from other sources?

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#4 2025-07-19 11:44:03

cryptearth
Member
Registered: 2024-02-03
Posts: 1,722

Re: Cannot get steam to download past 150Mbps

what's your actual bandwidth?
what gives https://www.speedtest.net/ as a result? -> what server does it select?
keep in mind: physical location and logical path can differ!
example: I live in Magdeburg - so the physical nearest location would be Berlin - but as my route goes my modem -> ISP (MDCC) -> local uplink (MDLink) -> DE-CIX in Fankfurt - so my logical nearest location is actual Frankfurt although it's physical more than double as far as Berlin
reason: most traffic I would exchange with Berlin is routed through DE-CIX in Frankfurt anyway - hence it's actual faster to just connect to a server located near DE-CIX than go all the way to Berlin and round-trip
it highly depends on the routing and priorites - for friends of mine you have Telekom as thier ISP the routing might look different so they may can benefit from Berlin not just physical but also logical nearest - but I don'T know the DTAG routing tables in MD

fun fact: MDLink as one of the cities major uplinks also has peering with local university - which in fact has direct peerings with other universities without the round trip to DE-CIX - so when I want to connect to a university in Berlin it's actually faster because the routing then changes from MDLink -> DE-CIX to MDLink -> OVGU -> some university in Berlin like TU-Berlin

welcome to the modern marvels of what we call the internet - physical distance doesn't matter anymore (or at least not much - although a satellite uplink might be logical shorter it's round trip of 40.000 km into orbit and back does add some heavy delay becomming actually noticeable (at least 4 trips: sender -> uplink -> downlink -> receiver -> reply -> uplink -> downlink -> original sender - that's 160.000km - about half the distance light travels in a second -> adding about half a second of delay) while a transocean cable will be way faster because it only spans about 20.000km on the ocean floor - but due to all the additional hops in between its routing priority could be worse so packets would prefer the route through space anyway

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#5 2025-07-19 12:30:59

Lone_Wolf
Administrator
From: Netherlands, Europe
Registered: 2005-10-04
Posts: 14,310

Re: Cannot get steam to download past 150Mbps

Moving to Networking, Server, and Protection


Disliking systemd intensely, but not satisfied with alternatives so focusing on taming systemd.

clean chroot building not flexible enough ?
Try clean chroot manager by graysky

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