http://bugs.winehq.org/show_bug.cgi?id=5442
------- Additional Comments From stefandoesinger@gmx.at 2006-17-06 03:42 ------- Yeah, it is most likely the rewrite.
My quick guess from the symptoms(slow, high cpu load) is that it locks the render target in a way that is not handled correctly in WineD3D. I will look at that game.