no problem... I have no idea what the setting does. When I had it turned on, certain games would show some ugly weird geomety and texture issues such as triangles that seemed to spike out and go to infinity or take up the entire screen. turning the setting off eliminated the issue. NV4_disp.dll errors usually happen on my system because of OC instability especially when the RAM is not configured properly. What's your RAM speed and latencies set at and what are you now running the FSB at?