I managed to get higher gpu usage and frame rate by creating a 11gb ramdisk and coping the /addon folder to it, then pointed to it with a junction. It was as if the game wasn't utilizing enough memory, and was starving the gpus with slow access to data.
I'm running 3930k @ 4.9, 680 sli, for the record
I'm running 3930k @ 4.9, 680 sli, for the record