Thanks mikael_aronsson and ZBuffer,
That did the trick...
What really confuses me now is that before I tried your solution, I tried turning "wait for vsync" on in my driver properties and it...

Hello all,
I am writing a simple "Falling Block" (Tetris) game.

Currently I am testing a single block that falls from the top of the screen to the bottom of the screen. The user is allowed to...