Hi, Tim.
Thanks for your suggestion. I already had the Output Device set to Computer Monitor Only. So far, the only way I get real time RAM preview is by having the Matrox mini powered down.and Ray Tracing set to GPU. I've got one more session scheduled with Matrox tech support tomorrow. If we can't find a solution, I may just go back to CS5. Between the Matrox issue with CS6 AE RAM playback, AE not recognizing QuickTime and Premiere dropping frames (also a Matrox-related issue), this upgrade has cost me much time and angst. While I like CS6 otherwise, I have to go with what works. So fingers crossed we find a solution tomorrow. Thanks again - happy to hear any other suggestions. Cheers, Steve