Got another 8GB of RAM! :) Running most of the .pbo's from the "Addons" folder on an 8GB RAMDisk. This, coupled with the recent Dev Branch and sensible graphics settings, have improved things quite a bit. The stuttering is alot better. Its not a "night and day" difference but it is noticeable.
I may switch back to the HDD on monday if the dev branch updates prove to be a pain, moving files around all the time, and compare the performance some more.
i5 2500k @ 4.4ghz
ati 6950 @ stock
win 7 64bit
Thanks for all the tips guys!