If you are using pipewire add -sdlaudiodriver pipewire to your CS 2 launch options.
For those using gamemoderun it would look like this: gamemoderun %command% -sdlaudiodriver pipewire
If you are using pipewire add -sdlaudiodriver pipewire to your CS 2 launch options.
For those using gamemoderun it would look like this: gamemoderun %command% -sdlaudiodriver pipewire
This is happening with dota 2 as well, probably it was messed up on the engine level.