If you go to protondb.com and search for the game, there's a link under the titl...

		tvb12 on April 20, 2020 \| parent \| context \| favorite \| on: Valve's Proton Has Brought 6000 Windows Games to L... If you go to protondb.com and search for the game, there's a link under the title for "GitHub Issue Search". I suspect that's where you'll find the discussions. Here's the issue for MCC. https://github.com/ValveSoftware/Proton/issues/2907