Thanks for the responses.
I figured it was my card but was hoping not since it seemed to jump to 21fps very quickly and never stutter with no grades applied. I just finished grading an intense music video and ended up with an average of 10 to 14fps.
For my motherboard I have a GIGABYTE GA-X58A-UD3R and an i7 930. There are 2 16x slots and 2 8x slots. Currently both cards are in the 16x slots and the intensity is in the 1x slot.
Looks like I’m gonna have to save up for a 580.