I’ve recently come across an issue with launching games from steam. For now I’ve seen it happen on two games (or rather demos): Crow Country and Sophonce. They launch fine but have some flickering black blocks on the screen that make them unplayable. Here are some images:
This only happens when they go full-screen and on wayland, on X11 works fine. I’ve tried many versions of proton including eggroll variants.
The games work fine when launched with wine without steam in the middle if i do wine <game.exe> . If i do it this way the games detect that I’m running on an ultra-wide screen and play as such but through steam they stay on 16:9 instead.
Ah, bummer… Can’t you just log in using X11 instead of Wayland for the session when you want to play? Assuming it’s a Wayland issue…