Hello all,
I've recently switched from a vdsl connection to a 1gbp/s ftth. I have a router running openWRT connected through an ethernet cable straight to my ISP's provided ONT. Other than that, i am running adguard on another host on 192.168.1.116.
My issue is that Steam download speed are ridiculously slow, even slower than my speeds on my 100mbps vdsl connection. First thing I tried after reading online was messing with steam, switching download regions and deleting download cache. Also:
$ cat ~/.local/share/Steam/steam_dev.cfg
@nClientDownloadEnableHTTP2PlatformLinux 0
@cMaxInitialDownloadSources 15 This did nothing.
At this point, i tried messing with my dns, even setting 1.1.1.1 as my default dns both locally and on my adguard. Also nothing
$ dig @192.168.1.116 store.steampowered.com
; <<>> DiG 9.20.24 <<>> @192.168.1.116 store.steampowered.com
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 21417
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
;; QUESTION SECTION:
;store.steampowered.com. IN A
;; ANSWER SECTION:
store.steampowered.com. 6 IN A 2.16.189.131
;; Query time: 12 msec
;; SERVER: 192.168.1.116#53(192.168.1.116) (UDP)
;; WHEN: Sun Jun 21 12:05:36 EEST 2026
;; MSG SIZE rcvd: 67
$ dig @1.1.1.1 steampowered.com
; <<>> DiG 9.20.24 <<>> @1.1.1.1 steampowered.com
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 20746
;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1
;; OPT PSEUDOSECTION:
; EDNS: version: 0, flags:; udp: 1232
;; QUESTION SECTION:
;steampowered.com. IN A
;; ANSWER SECTION:
steampowered.com. 20 IN A 23.196.141.21
;; Query time: 10 msec
;; SERVER: 1.1.1.1#53(1.1.1.1) (UDP)
;; WHEN: Sun Jun 21 12:05:59 EEST 2026
;; MSG SIZE rcvd: 61Next I've installed dnsmasq and set
in /etc/dnsmasq.conf. Also probably related at this point
$ find /etc/systemd -type l -exec test -f {} \; -print | awk -F'/' '{ printf ("%-40s | %s\n", $(NF-0), $(NF-1)) }' | sort -f
autovt@.service | system
bluetooth.service | bluetooth.target.wants
cpupower.service | multi-user.target.wants
dbus-org.bluez.service | system
dbus-org.freedesktop.nm-dispatcher.service | system
dbus-org.freedesktop.timesync1.service | system
display-manager.service | system
dnsmasq.service | multi-user.target.wants
docker.service | multi-user.target.wants
getty@tty1.service | getty.target.wants
gnome-keyring-daemon.socket | sockets.target.wants
iwd.service | multi-user.target.wants
NetworkManager.service | multi-user.target.wants
NetworkManager-wait-online.service | network-online.target.wants
p11-kit-server.socket | sockets.target.wants
paccache.timer | timers.target.wants
pipewire-pulse.socket | sockets.target.wants
pipewire-session-manager.service | user
pipewire.socket | sockets.target.wants
reflector.timer | timers.target.wants
remote-fs.target | multi-user.target.wants
speech-dispatcher.socket | sockets.target.wants
sshd.service | multi-user.target.wants
systemd-timesyncd.service | sysinit.target.wants
systemd-userdbd.socket | sockets.target.wants
wireplumber.service | pipewire.service.wants
xdg-user-dirs.service | graphical-session-pre.target.wants
Both speedtest.net and fast.com report speed >900mbps (even though they take a few seconds to ramp up, especially on fast.com) so i don't think i am isp throttled.
Finally, i tried passing everything through my vpn (using wireguard) but not much changed. Download speeds on steam maybe stabilized a bit more around 30mbps, but still far from the expected 90-100 i'd expect to see (and also fluctuating).
Also, on another machine on the same network I have a qbittorrent client which caps at around 90-100mbps.
Sorry for the long post but I am at a bit of a loss and out of ideas at this point. Cheers 
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