http://bugs.winehq.org/show_bug.cgi?id=27879
--- Comment #8 from GyB gyebro69@gmail.com 2013-01-20 07:38:13 CST --- (In reply to comment #7)
It looks like the patch was not commited. Can anyone update the status of this bug?
Yep, it's still present in Wine 1.5.22. Nvidia binary drivers 304.64. Orm=backbuffer is a workaround to the slowdown: but shadows are not rendered correctly with that setting (basically it's the same as before the regression, dark, diagonal lines appear instead of shadows, but game speed is okay).