http://bugs.winehq.org/show_bug.cgi?id=9509
Elie Morisse syniurge@gmail.com changed:
What |Removed |Added ---------------------------------------------------------------------------- CC| |syniurge@gmail.com
--- Comment #12 from Elie Morisse syniurge@gmail.com 2009-09-19 22:18:34 --- This is due to the game fetching the backbuffer two times per frame to draw the HUD. I've been looking into this issue 3 years ago (I had a Radeon 9250 with OSS driver back then) and messing up with the GetDC function I managed to get smooth performance without HUD.
I'll be taking a closer look again soon.