Sometimes this dialog box will pop up (see screenshot below). Every time it appears I select "Keep the current color scheme, and don't show this message again". Windows then reminds me again -- either the next day or after reboot, or sometimes another 5 minutes later.

Do you want to change the color scheme to improve performance?

Windows has detected your computer's performance is slow. This could be because there are not enough resources to run the Windows Aero color scheme. To improve performance, try changing the color scheme to Windows 7 Basic. Any change you make will be in effect until the next time you log on to Windows

• Change the color scheme to Windows 7 Basic
• Keep the current color scheme, but ask me again if my computer continues to perform slowly
• Keep the current color scheme, and don't show this message again

Is there some reason why Windows is ignoring/forgetting my attempts to suppress the dialog? I'd love to never ever see it again, it's annoying, and it alt-tabs me out of fullscreen applications.

If it matters, I'm running Windows 7 x64 Professional. I believe the dialog appears because I'm forcing Vsync and Triple Buffering for DirectX applications.