When ever I have issues with running steam games on linux, I use the “force compatibility” option, and choose the latest glorious-eggroll version of proton.
I’ve gotten lazy in my older age, so I use protonup-qt to manage my versions of ge-proton. Bonus: This tool can also manage ge-proton versions for lutris, so it’s got that going for it, which is nice.
If this low hanging fruit doesn’t do it, then I’ll checkout protondb to see if anyone else has figured out workarounds for various issues. That link shows some chatter around the latest update, with a couple launch options to try.