Input lag when Vsync is on

[MaxGunz]

The lag should be no more than 2 frames, not 1 second.

I was having slow-down problems that I took to be system problems until my video card died. The fan was failing and the card would slow down as it overheated. The process took over 2 months. Input was like the mouse was drunk, FPS would go slide show, and then it would be good for a while. That is one example of what hardware problem can do. Wish I had known what the real problem was instead of thinking something else.