The frames per second "FPS" allows you to control how many frames are shown in 1 second. If you already created an animation at say 12 FPS and you raise the FPS to something higher the animation will look faster.
In the animation industry 12 FPS is the standard. Anything lower than this and the animation will look a bit choppy and anything higher will look smoother.
Checkout the following user video tutorial to learn more about FPS.
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