Switching CABasicAnimation on the position property mid animation causes a flicker?

Try using a CATransaction lock around your updates to see if that helps. This will prevent the previous animations from changing the position of the layers while you're in the process of updating them with new animations In your touch handling method, wrap the animations in a transaction and lock: CATransaction lock; CATransaction begin; // update the sublayers with new animations CATransaction commit; CATransaction unlock.

Try using a CATransaction lock around your updates to see if that helps. This will prevent the previous animations from changing the position of the layers while you're in the process of updating them with new animations. In your touch handling method, wrap the animations in a transaction and lock: CATransaction lock; CATransaction begin; // update the sublayers with new animations CATransaction commit; CATransaction unlock.

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