Hi all, been having trouble with some new HP laptops running Premiere (2021 v15.4) , through a BlackMagic UltraStudio HD Mini, into an SDI monitor. Standard h.264, .MXF videos. Both models are having the same issue (on about 4 different laptops deployed now). Tried different drivers, as "certified" by HP Performance Advisor, reinstalling. The issue itself appears very inconsistently, has been a struggle just trying to reproduce it on the same systems/projects.
Video will either stay black on Prem and the monitor frozen on a fram while playing sound, or play distorted video (white lines, bad color) with a weird beeping sound. I was only able to reproduce something similar one time, by downloading a video off Latakoo with MPEG-PS encoding. After trying to play that video, the playback would go black and further videos would also have issues or not play. But, that one gave an actual error message (something about frame recursion) while the original issue has no error messages. Even that only occurred a few times, then the video started working fine.
Any thoughts on how to go about diagnosing/fixing or even identifying this issue would be greatly appreciated!