http://bugs.winehq.org/show_bug.cgi?id=15925
--- Comment #38 from Jonas Lyndgren nospam4@local.se 2008-12-19 17:07:49 --- I have no proof for this, maby just call it a gut feeling; I think the/one of the reason(s) for the bad performance people are reporting here is caused by wine+wow not using multiple threads correctly. It spawns them allright, (about 10-15 of them), but only 1 of the threads are at 50% usage, while the others are at 0-1%.
Considering that WoW is CPU-bound on anything but a very very bad gfx card, this is going to cause a MAJOR FPS problem, especially in crowded conditions where addons and stuff is hogging a lot of CPU time.
Something to keep an eye out for when bug 11674 is solved maby?