Possible source of FPS issues

[Delc]

So the big thing that is hurting me now is the new sound engine. Blizzard decided to move away from all hardware acceleration for sound. My sound is choppy at best now (since I use wine under Linux I depended on the hardware). My machine is also more than three years old now, so the combination isn't kind to me.

I had the same problem. There is a pretty decent fix towards the bottom of the WoW on wine page that has worked for me. I have still have reduced FPS and occasional sound issues, but not as bad as it was on patch day. Moving to software sound = stupid imo.