Hello @regulator-g, we're using one issue report per unofficially supported game title, so I've gone ahead and transferred this issue report to https://github.com/ValveSoftware/Proton/issues/823#issuecomment-517508977.
proton 4.11x1 2019-08proton 4.2x1 2019-08
Symptoms
Using Proton 4.11,
I launch Dishonoured 2.. It works for about a minute then quicksave/quickload stops working, I press ESC for the menu, it starts bringing up the menu then freezes. I can alt+tab and quit the game.
Additionally in-game when I look around I see shadows that appear then disappear as I move the mouse.
e.g.
https://imgur.com/a/o4FtkPv
No obvious messages in console
-vsync off
-fps_max 60
-triple buffering off
Proton 4.2 does not have these issues
I have renderdoc installed if you need me to try and use that for diagnosis.
Compatibility Report
System Information