All of those bugs were closed after being fixed years ago, nothing was actually changed upstream. F.
https://bugs.winehq.org/show_bug.cgi?id=46221
https://bugs.winehq.org/show_bug.cgi?id=50868
https://bugs.winehq.org/show_bug.cgi?id=35701

also, if you press alt+enter, the game toggles between windowed and fullscreen, which may help if it loses focus.

So far, I’ve had best luck while using the wine virtual desktop - suggests to me that there’s a wine renderer bug causing the invisible game issue. Not sure about the speed though.

nope