Hmm - you have vsynch on?
I am having terrible frame rate issues with a rig that can *should* run anything.
- GeForce GTX 980 with 4GB DDR5
- i7 5820 @ 3.30GHz (12 CPUs)
- 32GB RAM
only thing I can think of is that the game is on a 6MBs SATA drive rather than on C:/ which is an SSD.
At a loss as to why I cannot get stable frame rates with the graphics at pretty low settings.