iOS / iPad slow animation


I am creating a game, when it runs on the computer it works perfectly.
When exporting to iOS the animation is choppy. For example, the only animation
I have is a block flipping on its other side and it is a simple 2D puzzle game.

It looks as if it runs on 3 FPS when you see the animation.

Any ideas on where to start to diagnos this?

Thank you so much in advanced.

i tink this might help finding your problem,