Hi Dennis,
I am having the exact same issue as you and have yet to determine what the issue is. I run a post house and have 5 Mac Pros but the ONLY machine that is consistently crashing is my new 2 x 2.4 GHz Quad-Core Intel Xeon. Just like you, I have a 5770 graphics card, ample RAM, and a BlackMagic Multibridge Eclipse card. It doesn’t seem to be a codec issue, as the same thing happens with ProRes, XD, or animation.
Bottom line – something seems to be wrong with this machine and I can’t figure it out. It crashes all the time, preceded by flickering footage. Have you had any luck with this? Anyone else? This is driving me crazy!
Thanks,
Josh Cramer
House of Trim