http://bugs.winehq.org/show_bug.cgi?id=27298
--- Comment #36 from Jonathan Strander mblackwell1024@gmail.com --- Yes it depends a lot on the section. Obviously under Windows it would be easy to get 60+ fps, but I would tend to expect 30-40 average under Wine (I typically see a 25-50% cut for demanding D3D apps). I definitely pull in the 30's indoors or in misc environments but outdoors or in certain scenes it's a complete crap shoot.
I have not been running Wine with CSMT patches, however. I tend to keep everything fairly vanilla except I build an Xliveless DLL. My CPU is most definitely not being fully utilized in that respect.