When at factory settings 2D downclocks are 400/1200 and everything works fine. However when I try to overclock the GPU in CCC or Afterburner the 2D downclock settings drop to 157/300 and I get tearing/flickering in Firfox while browsing. Not to mention the clocks are jumping from 157/300 to 400/1200 constantly. All is fine though if I open a game and it jumps to 3D mode. Any thoughts and suggestions?