AA and Vsync?

Solution
Vsync is vertical sync, it restricts your frame rates to the refresh rate of your monitor, this can stop tearing, where you see a refreshing line slowly running down the screen.

AA is anti aliasing, it takes the average value of the pixels around each pixel, this gives slightly blurred edges on objects which makes for smoother edges and nicer looking images.
Vsync is vertical sync, it restricts your frame rates to the refresh rate of your monitor, this can stop tearing, where you see a refreshing line slowly running down the screen.

AA is anti aliasing, it takes the average value of the pixels around each pixel, this gives slightly blurred edges on objects which makes for smoother edges and nicer looking images.
 
Solution