https://bugs.winehq.org/show_bug.cgi?id=39421
--- Comment #15 from Jonas Maebe jonas.bugzilla@gmail.com --- Just wanted to add that 3beec95a092a261f3c265fd30a10e0c0ead524bc "winemac: Use CVDisplayLink to limit window redrawing to the display refresh rate. (try 2)" by Ken Thomases doesn't help (in fullscreen mode; in windowed mode, the screen stays black, but I believe that was already the case before that commit).