iOS / Core-Animation: Performance tuning

Question

I have my app running on my iPad. but it is performing very badly -- I am getting below 15fps. can anyone help me to optimise?

It is basically a wheel (derived from U

Answer 1

Are you using shadows on your layer for me it was a cause of performance issue, then you have 2 options AFAIK: - setting shadowPath that way, CA does not have to compute it everytime - removing shadows and using images to replace