I am sorry that you are facing this strange issue.
I request you to attach a screenshot (of those horizontal glitches) and we will try to troubleshoot.
Please share more details about the physical setup at your end and your display monitor details.
Why did you choose Open CL.
Moved to Hardware forum?
Because it's an AMD style GPU, so no CUDA available.
O well, it's up to 141. Any advice on how to get to such a low number? I don't notice any playback problems and all works as smooth and fast as I could wish it for, so it does not seem to really affect performance. Still, f there are unnecessary processes running I would like to stop them...
To tune your computer
- As a starting point turn off indexing on any drive involved with Premiere Pro project files.
- Disable every startup process the you can, see my Win 8 below.
- For more on tuning see Harm's tuning guide. It is a little out of date but should give you other steps.
Sometimes the problem is there, sometimes it's not. I recorded it by attaching a Atomos Ninja Flame recorder, receiving the same UHD signal my main screen is receiving. That did seem to make matters worse than normal, but at least that allowed me to show you guys what happens. Strange thing is, I disconnected the Atomos, problem seems gone, I reconnect it, problem is still gone. So it happens sometimes, but not all the times, and I can't see a pattern or cause in it.