https://bugs.winehq.org/show_bug.cgi?id=42330
--- Comment #49 from hwkiller@gmail.com --- I've since gotten it to work, but it seems /much/ harder than before.
I seem to have better luck just hold down alt-enter and letting it keep cycling between windowed and not windowed. I have had MUCH better luck by forcing it to start full-screen, then holding down alt+enter (which, due to nvidia + using a non-native resolution, causes my monitor to basically stay black while it adjusts resolution over and over again), for a long while. Then letting go, and sometimes (probably 20% of the time) it will work.
I can very, very rarely get it working from windowed mode on startup though, and I'm not sure why.
But yes, it does perform much better! I still have the blindingly bright sun problem and glitchy shadows (which I now just disable). The audio is messed up pretty consistently, whereas before when I didn't have to just hold down alt+enter the entire time (and alt+entered based on some loose timings I've gotten used to), the audio could often be fairly perfect.