http://bugs.winehq.org/show_bug.cgi?id=18232
--- Comment #9 from tyle7@hotmail.com 2009-08-16 14:18:48 --- (In reply to comment #8)
01:00.0 VGA compatible controller [0300]: nVidia Corporation NV34 [GeForce FX 5200] [10de:0322] (rev a1)
You could try setting OffscreenRenderingMode to backbuffer instead of fbo.
Touhou 11 went down to 19 fps for me when fbo became the default OffscreenRenderingMode. I still get close to 60 fps when backbuffer is used.
This is on a GeForce 6200SE