Playing Hi-Def Full Resolution Video. Why staggering?

    Oct 19 2006 | 8:05 pm
    I have a patch that plays a full-res video and displays text at certain time. I set the qmetro to 10, and also try to minimize the number of bangs, but somehow when the video is playing, it would sometimes stagger a little (not all the time). Does anyone know what cause the staggering and how I can fix this issue?
    I'm running the patch and video on a Dual 2GHz G5 with 1.5GB SDRam.
    Thanks so much!