http://bugs.winehq.org/show_bug.cgi?id=22478
--- Comment #3 from GyB gyebro69@gmail.com 2010-04-25 14:30:03 --- I think the demo of KB: Armored Princess contains Starforce, that's why it doesn't start in Wine, but it would be a good "benchmark" for this issue, because it has an animated background in the menu.
As for KB: The Legend, the slowdown can be seen right in the tutorial, when you start a new game. With shadows disabled both 1.1.42 and 1.1.43 gives nearly the same performance. The difference is visible when shadows are on 'normal' setting: with 1.1.42, well, it's slightly below the playable level on my hardware. With 1.1.43 the situation relapsed: as if I could see still images. I guess the issue is more noticeable for me, because of my low-end hardware. I used 'normal' settings in every graphical options, with FSAA disabled.
Anyway, does it matter if I compiled 1.1.43 with cflags -O0 this time? 1.1.42 was compiled with the default -O2. Might it cause the performance loss when shadows are enabled?