I'm trying to play Might and Magic 7 through Heroic Games on a new Pop_OS! installation on my desktop PC. The game runs fine, I also managed to install the grayface patch.
What isn't working: A few inputs arent working, specifically: enter combat, quick cast, attack, jump and yell. This problem is common and known, but I couldn't find a fix that sounded solid and generally working. It's not an issue of the key inputs, because remapping other functions to those keys, they work.
My issue now is: I don't see how I could run an older Proton or Wine version in Heroic, beyond the ones listed in the Wine-Manager list. Those reach back to GE-Proton8.14 or Wine-GE-Proton7-27. Both of these still exhibit the same issue.
The linked reddit post mentions Proton versions between 3.x and 7.x - how could I get this to run?