Keith, I´ve had the exact same problem with CC on that machine. Only that I was editing in 1080p!!! Ridiculously slow and poor performance.
I spoke to the Adobe customer service, they said in mid June that a patch from Adobe would solve this problem / bug. Nothing yet from them, I´m concidering returning the Retina and get the iMac 27″ with NVIDIA graphic card.
What kind of graphic card did your laptop have?
Jon