When was the last time you updated your graphic card drivers?
What about AE?
What sort of stuff is in your comps?
Any third party plugins?
Do you have OpenGL turned on for previews?
We tried updating both AE and our graphics drivers, neither had any affect.
All comps include Jpeg, and/or Illustrator assets with everything else done inside of AE. Assets do not total more than 4-5 Jpegs, and 1-2 Illustrator files.
Third party plugins are in all of our comps, all from Red Giant and Video Copilot.
We do not use OpenGL for previewing.
I've heard of one or two of the Red Giant plugins causing problems like this and getting resolved. You might try talking with their support team.
I am looking into the Red Giant end of things, thank you very much for your help Szalam!