title: How to improve performance of CALayer animations?
body: <p>while studying Core Animation, I've made a UIView category which makes a subview be broken into a lot of tiles and diffused.
  <a href="https://github.com/minorblend/HNTileDisappear" rel="nofollow">https://github.com/minorblend/HNTileDisappear</a>
  However, when the number of tiles are not small FPS of animation drops steeply.
  Is there any way or idea to improve the performance of this kind of CALayer animation?</p>