

What might have happened: if you select a global compatibility tool (proton) in the steam settings, it will use that for all non-native games. But any games that ship a Linux binary will still use that instead of Proton. This is generally good, but some devs ship a Linux binary that’s actually not as good as the Windows one. I’ve seen some games not update the Linux binary until much later than the Windows one, so the Linux one is out of date, and for some games it’s just flat-out broken. In these cases you can manually select a Proton version for that game, which will force it to run the Windows binary.
Well anecdotally many of us have the opposite experience so I guess sucks to be you?