Earlier quoted context omitted.
I wonder if this might be some odd library issue that could be fixed in the WINE prefix. I knew a guy that wanted to play a Japanese version of a JRPG on Linux and he figured out he needed some weird libraries there to properly render the font, which was causing the game to not start. Anyway, for older games and emulators, playing on Linux has been a magnificent experience for the most part.
Out of incessant curiosity and borderline obsession - I installed KDE, then I enabled the experimental Wayland support for Proton and tried the game again. It runs great now. The Wayland support didn't seem to do anything when I was using Gnome but it's a noticeable difference on KDE. As long as I disable vsync which locks the framerate at 30fps for some reason. But overall the game is very playable on Linux now. Gue…
This makes me wonder if this would be a preferable setup for Proton.