I am running the game now on Linux without issues. Had to select Proton experimental as the Steam play version to make it work.

I had some crashes that were fixed by lowering some settings, and still a crash every so often where I have to kill the game, then restart steam. Small price to pay to play something on linux I've been looking forward to so much.

Nvidia 455 on proton experimental arch

Where as I can't get it to run at all with proton 13.4 and nvidia-450

Where's proton experimental?

In Steam, in the Steam > Settings menu, go to Steam Play and select "Run other titles with: Proton Experimental"

Righteous. It'd probably help if I was using the 455 driver too heh.

Yeah weird. Pop_OS 20.10 with a 1070ti and the nvidia-455 driver doesn't get me past the initial launcher. That's annoying alright.

I can't launch Steam with 455.

You have to install 32bit driver libraries to run steam. On Debian/Ubuntu/Mint it's libnvidia-gl-455:i386 package.

I couldn't run steam after upgrading to 455, and noticed it was because CUDA and some other unofficial display driver PPA in my sources.list was blocking simultaneous 64bit and 32bit install. After removing those, I could install the package again.