Hello,
I've been having this issue for a couple weeks now. It started out just happening a couple of time. A restart would fix the issue. Now it's sticking and can't seem to find a way to fix the issue. I have multiple layers of video/titles that I us transitions to bring in and out. Sometimes it happens on a straight cut. I get flicking horizontal lines. Not sure how to explain it.
I am on PP CC
Mac Pro Garbage Can Late 2013
OS X 10.9.3 (13D65)
2.7GHz 12 core Intel Xeon E5
64 GB 1867 MHz DDR3
2x AMD FirePro D700 6144MB
1TB Flash running OS and Programs.
12TB Raid 0 External HD via Thunderbolt 2
Red Giant Universe