http://bugs.winehq.org/show_bug.cgi?id=28377
--- Comment #6 from GreatEmerald pastas4@gmail.com 2011-09-29 14:01:37 CDT --- No, this is definitely a very non-specific bug, because for me it happens on each and every DirectDraw game I have. If you have a free directdraw application you can suggest, I will gladly test it, since nothing comes to mind right now.
As for that other test, I can reproduce it, but I can reproduce it on both GDI and OpenGL without difference, and only if I press multiple buttons at the same time, and moving the mouse does not cause any latency whatsoever. So it seems to not be related to this issue, since for this issue I get a very low framerate only by moving the mouse, and it works instantly, plus the framerate goes right back to normal after I stop moving it.
I also tested a few different modes of Heroes3HD, where they have several renderers to offer. If I choose the MMX renderer, I get a lower framerate than with forced GDI, and no graphical glitches. With the GDI renderer, of course, the performance is as it should be. With the auto and default renderers, I get graphical glitches and the lowest performance.