[icarus]

Originally Posted by KG26_Alpha

The 'vertical synchronization' control is less cooperative: in Windows XP, it applies to both OpenGL and DirectX 9 APIs; in Windows Vista and Windows 7,
it only affects the OpenGL APIs.[/I]"

http://forums.nvidia.com/index.php?showtopic=173860

That's curious. I get lots of tearing in W7 DX API's when vsync is off and none with it is on, so it appears it does something in DX???