Im playing on an I5 2300 2.8 6GB ram gtx 760 latest nvidia beta drivers.

The game runs just fine untill a couple hours of gameplay, then the game starts skipping like its losing frames. Sometimes its small annoying jitters sometimes its a slightly longer pause. Ive noticed it most in south shroud / thanalan areas. Warping out fixes the issue but it quickly comes back when I return to the area. Ive noticed random jumps in gpu load rising and falling, and rises in gpu temperature. I suspect its the beta drivers... Could this be caused by my 6GB ram? Should I get more? Please help.