In this same vein, we're outputting 5 heads from 1 ShowSage ShowServer HXD (WO6) machine and having trouble with staggered starts on the outputs as well. I think it's CPU and codec related because after a few loops of the timeline, WO crashes. I've gotten them running smoothly as single file loops for each output by disabling b-frames (still H.264), but when I try to run multiple smaller files (for pixel mapping) within the same timeline, I run into the staggering on loop (and crashes).
Do you think that HAPQ would help?
Also, what would be the easiest route for having the client convert to HAPQ on a Mac. They are producing in Adobe AfterEffects and/or Premiere. Trying to shorten the workflow as possible if it comes to HAPQ running smoother.