Attempted to manually install dotnet48 (and a three digit dotnet version that it seemed to get stuck on in the proton logs), vcrun2015 and d3d11, the first time I got it running I also manually installed fonts for content manager as well as protontrick's corefonts

When I first tried running it with protonGE8.11, it ran the default launcher as well as content manager fine, even got to play the game with the vanilla launcher, however with content manager, as I tried to install custom shader's patch 1.79 down to 1.70, some would give me an unimplemented instruction error, some would give me a complete game freeze. So I thought I might have messed up something and wiped my prefix (not before trying some winecfg/winetricks fixes), after which no matter what I tried, it seemed to always get stuck on installing dotnet48 (or dotnet472 through automatic protonfixes) and would not boot at all, even without content manager. Steam logs specifically said on attempted install of dotnet472 that my prefix folder was not empty and that apparently constitutes an error, not sure if it just gave up after that. Proton logs weren't too useful to me, with nothing obviously standing out before "failed to create process AssettoCorsa.exe" at the end. Not sure where to go from here other than keep waiting for proton to improve and hope that one day this game will actually run reliably.