I set my SWTOR Profile in NVCPL to Single-GPU rendering... my FPS is locked at 60FPS (flux'ing 2-3 frames), but the stuttering is still pretty bad.
EDIT: Moved to Fullscreen (Windowed) > problem no longer exists, turning on SLI to see what happens.
EDIT2: Turning the SLI on caused my frames to drop from steady ~60FPS to 30-40FPS + staggering.
I hope this information helps Devs out.
The reason windowed(fullscreen) works is because crossfire/sli doesn't work in windowed mode. you might as well turn of your second GPU.