Stuttering, Small freezes and framerate Issues

[Petch1984]

I'm on a iMac (I created a thread in that section about screen tearing on mac) but I'm also experiencing these stutters. They happen right before something scary happens.

A good place to test the stutters is near the start - down the first main stairs, when the chandelier shakes and pictures fall. No matter what settings I use or what I change in the streaming/buffer config the problem remains. I know this isn't a mac thread but it's the exact same issue.

This along with the screen tearing has left me with a broken game. I hope it gets fixed because the game does look good.