GW2 is also known to dislike over clocking. I had to down clock the video card on my old machine in order to stabilize the game. The machine works fine for everything else. It was in a sticky post related to crashing on the old board. Not sure if that posting came across to the new board. That said, I think these current frame rate issues are more related to the server than the client-side hardware setup since when it happens it tends to affect an entire instance, or at least groups in the vicinity of each other. I will try turning off OC completely tonight but so many people having same issue and probably havent OC'd their GPU, so im doubtful thats the issue. people are telling me to clear gw2 cache so i will try that as well