What resolution are you playing at? If you have OC'ed that CPU, you should have not much problem. It is still pretty good. Try reinstalling the GPU drivers.
Install Afterburner and look at the usage stats of your processor and video card. This will help you determine what's going on.
I think it's the system (SSD or OS) or the CPU. I've changed my file system true a command; diskpart and might of screwed something up, but I'm not sure. Thinking of getting a new SSD.