Sounds liek graphics hardware acceleration is flaking out, but without exact system info nobody can tell you much.
Oh sure. I should have included this information:
Processor 2,3 GHz Intel Core i7
Memory 10 GB 1600 MHz DDR3
Graphics NVIDIA GeForce GT 650M 512 MB
Software OS X 10.9.5 (13F34)
It could be your memory -- that's a VERY weird amount for a Mac. It implies that you have different-sized memory sticks in the thing, and Mac OS's can behave very oddly with them.
I have one memory of 8Gb and one of 2GB. I put the 8GB so AE and Premiere run faster.
Its just weird that this problem just occurs since I made the last update. Thank you very much for the advice.
I understand about adding the 8GB stick, but I have to tell you -- unless you make the sizes match, which means bringing your machine up to 16GB -- you'll want to look at OS and memory issues first before you do any other kind of troubleshooting.
I never considered this being a problem. Thank you very much. I will try taking the 2GB out and see if it will change something.