Title is quite self explanatory, but I have some animation being done in a loop triggered by CADisplayLink. However, as soon as I scroll a UIScrollView I have added to my vi
Here you can find a better (and more complex) solution:
Animation in OpenGL ES view freezes when UIScrollView is dragged on iPhone
that allows you to use 'NSRunLoopCommonModes' and avoids OpenGL freezing when holding a finger without scrolling.
This is related to what Doug found (setting the frame interval of CADisplayLink to 2 instead of 1 fixing UIScrollView).