I know, lame post, but I wanted to say that Linux gaming has gotten soooo much better, to the point that I honestly think my games are running better than on Windows. I’ve played so many games, but notable ones are Halo: MCC, MS Flight Sim 2020, Satisfactory, Mass Effect Legendary Edition, and right now I’m starting a full playthrough of Dragon Age.
Dragon Age is notorious even on Windows for being a pain because it’s such an old game. You have to install the 4gb patch, and even then it’s a bit rocky. Not on Linux though! I did have to install PhysX but I googled it and saw it was 2 buttons to install on Linux! Now it’s been rock solid and stable, with no crashes.
Linux gaming may have a high bar to learn, but that bar is constantly getting lower! Exciting times!
AMD is easier for sure, but not for this. I think you may have to tell proton to use a specific card when starting up, or display. I’d start by googling environment variables with vulkan or proton to tell it which card to use. I think there was something like DEVICE=1 or something like that that you put before your command