CATransition gets 'choppier' looking the more times it's shown

[yezaev]

I have an app that uses a push transition to show different screens of the app. Upon launching the app, the transition is very smooth. But as I swap from screen to screen, the animations slow down. The only thing I'm doing during the animation is loading a new view from a nib into a container view.
Any idea what could be causing this?

[yezaev]

I figured it out - I was mistakenly adding the same view over and over again to the container . Instruments didn't show any leakage so I didn't catch it immediately, I had to think through it a bit :P