Your the first I've seen report this. I'm not seen anything similar on my two systems.
Given this, and your general comment about CC being a step back, I'm inclined to believe you've got a bad install. My own impression is that CC has actually fixed a lot of the "steps back" that CS6 took and productivity has noticeably improved with CC7. If you're not having that same experience, something is wrong.
For this particular issue, I'd be looking at the graphics card/driver.
Replying to say I'm experiencing similar behavior. I was assuming this is because of the long-GOP footage, but it's annoying nevertheless.
My system is completely different:
Mac Pro 5,1
GTX680 Mac Edition
Close your reference monitor down completely and try again.
I've had this issue since CS6 and BM Intensity Pro. See earlier posts.
I'm having an issue where the CTI will jump back a few frames every three or four seconds. Session is on hold, and I look like a dummy.