Try using custom Protons:
However, I doubt it will help. Seems like the runtime is broken. Try installing steam-native from repo which will reroute runtime to system ones. You can also try staring steam with:
STEAM_RUNTIME_HEAVY=1 steam
I’m surprised about pressure vessel creating an issue here. It’s for developers only so the usual user shouldn’t need it, so if you find a way to disable it, do it.