Hello @brzozowskia, we're using one issue report per unofficially supported game title, so I've gone ahead and transferred this issue report to https://github.com/ValveSoftware/Proton/issues/3224#issuecomment-1003605204.
proton experimentalx1 2022-01
Compatibility Report
System Information
I confirm:
Symptoms
The game runs reasonably well but drops to very low frame rates after escaping to the settings menu even one time. It does this reliably but if i don't do this i can play the game uninterrupted for hours. Game will run cut scenes.
Reproduction