[PowerElectronix]

It does increase input lag in the ssme manner Vsync does, there is a wait time before the information is sent to the screen to avoid tearing.

If you wanna minimize latency, you'd want always the most recent information available, which vsyc or buffering does not provide. You trade that for tearing with those schemes.

[tadfisher]

I should have been more clear and contrasted with double-buffering, thanks.