Corpse Spider huge FPS drop.

Hi, I'm glad a few options were added for D3 to run smoother on older systems. The overall experience has improved a lot on my computer thanks to being able to turn AA off. I'm getting overall decent FPS except when I use this ability with the Witch Doctor. When I do, the FPS drop from 30ish to about 1-5 until the animation is complete.

Since I haven't found another thread about it I think my system is the issue rather than it being a bug hence why I posted in this section.

These are my specs:

Latest OSX Client (issue was present with the previous version as well)
Mid 09 Macbook Pro 13"
OSX 10.7.2
2.26 GHz Core 2 Duo
8GB 1333 MHz DDR3 RAM
NVidia GeForce 9400M

I haven't experienced this performance issue with any other abilities so far. I might install it on a Windows partition when I have time to see if the problem is specific to the mac client or it's just my graphics card on the edge of exploding.