I’m actually no longer getting the error at all. Since PS Vue folded, I switched to YouTubeTV and no problems so far.
One their thing I did change is under System - Advanced settings system setting - Advanced display settings - Set the auto-adjust display refresh rate to Disabled. I can honestly say I can’t remember the last time I saw the error on any channel.
My setup is a Roku Ultra connected thru an Onkyo receiver to a Samsung LED...I do NOT have 4K. Roku is set to auto detect display, which is a 1080p 1.4 HDCP.
I have had the same problem, but I already had Advanced Systems item disabled. I have had the error twice now recently, but not before that. I also added Netflix recently. I wonder if the problem appears only when you exit ROKU in the middle of a Netflix HD feature.
I pulled power cord out some. Not all the way just loosened it out some. I had done this with hdmi cord right before. But I got picture back error code gone when I pulled that power plug out a little idk...????