60FPS is the target

I recommend that you make every effort to reach a consistent rate of 60FPS. That corresponds to the maximum refresh rate of most LCD displays and is also the speed used on popular gaming platforms such as Sony’s PlayStation and PlayStation Portable (PSP).

A high frame rate is challenging, because at 60FPS you have only 1/60th of a second (16.67 milliseconds) between calls toonDrawFrame( ) to do everything that needs to be done, including any animation, physics, and game calculations, plus the time it takes to actually draw the scene for the current frame. The only way to tell whether you’re making your FPS target is to measure it.