It's possible you just have something screwed up or maybe graphics settings too high. To offer more than just generic help we will need you to post your settings. You could try dual booting and running the windows or ubuntu builds as I have read they generally perform a bit better than the mac version, I've never tested the mac version.
As I said your cpu may be a bit too slow for this game. The way to fix it is to not have frame rate drops.
The game doping to 20fps is causing the audio stutter. (03-28-2013, 02:24 PM)Xalphenos Wrote: What dsp are you using? If LLE try HLE.