It's still worth checking protondb.com for fixes

I didn't see protondb.com cited. It's still worth checking protondb.com for fixes and runtime parameters for the Windows-native games you want to run.

Despite many games being tested and validated for Steam Deck compatibility, there's a community-sourced database of gotchas and optimisations at protondb.com. Someone may have the same combination of esoteric hardware and provide incantations to get good performances from your devices.

K3n.