Hmm this is pretty surprising for me since you are running on an insane high end PC system which should be running this game smoothly no matter what! I agree with you that this game needs to be optimized badly! xD
I have my PC system running with:
AMD Phenom II x4 955 @ 3.2GHz
4GB of RAM DDR2 800MHz
NVIDIA Geforce GTX 560Ti 448 cores 1280MB 320-bit GDDR5
1TB 7200RPM 64MB cache hard drive
I have been playing with my first character as jedi knight on Coruscant. On my maximum setting, I usually get 90 - 110 fps in some small areas with few enemies or when I am not looking at the many motions in graphic detail such as grass, trees, people, traffics, etc... 40 - 80 fps in random PVE combat areas with plenty of enemies out there... 25 - 50 fps in the middle of the big city (near the Senate tower) on Coruscant.
Crazy huh? It's like going from smoothness to the big drop in fps in some areas. I do think that my AMD Phenom II x4 955 is the one struggling with the whole crazy calculating to process everything in this game since it is mostly CPU bound. xD