Seen this problem on the forums, but no solutions have worked for me. I have a new i7-2600 and a 1gb 5770, 460w psu, 8gb ram, & I'm running Windows 7 64-bit. I installed latest AMD drivers (CCC 11.7 and driver 8.872). My proble is that while playing a game, I have lag that occurs for a fraction of a second pretty regularly but independent of how much action is occurring. It even happens when I turn graphics settings down, & happens with v-sync on and off. The stuttering looks different from typical lag that happens when the gpu can't handle the graphics settings. FRAPs says I have good enough fps (30-50). The main games this happens for were CoD4 and GTA4. Call of Juarez (DirectX 10) ran flawlessly with no stuttering. I enabled Triple Buffering for OpenGL in CCC and it seemed to help with CoD4 but not with GTA4. I downloaded RivaTuner with D3DOverrider to try to enable Triple Buffering for DirectX9 but this actually made the stuttering worse. If I had to guess, I would say there's something wrong w/ the communication between CPU and GPU, but I really have no idea how to fix this. Any ideas?