Imagine a game running at 30fps, fixed at the frame rate by the settings in Unity or Xcode.
What does Unity do with spare time if it's functions, scripts, game logic, physics, rendering etc is all calculated with lots of time to spare before the next frame?
EDIT: does it, for instance, let itself know that it's time to kill before the next frame? Is there some way of using this spare time without impeding the frame rate, and having any extra work not completed between frame 1 and 2 done between frames 2 and 3?
Ehm, nothing? Either that or continue working on it's secret plot to overtake the world.
Unity uses its free time to help it decrypt complex encryption keys from the government in a distributed processing scheme in order to grow stronger and become Skynet. :D
GREAT! Wonderful use of time.
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