Hey all, while I wait for the new cable to arrive, I've gone a step further. I have disconnected both the Premiere+ and Ultra from the 4K TV, and replaced it with my 3600X streaming stick.
My thinking here is, it will just give me a good chance to see if it's just the top end Roku models that aren't playing nice, or if ALL Roku hardware doesn't work with this TV, so far the stick has slipped in with no problems. No HDCP errors at all, even after first play after the startup.
Also to note, I have connected the stick to the same port the Premiere+ was connected, reason being is it's an enhanced port and while the stick can only go to 1080p just curious how the stick will play long term. There again no issues
I'm powering the stick from one of the TV's USB ports and of course, no issues there either.
One other note, the stick is running software 7.6.0 build 4116, which would suggest, the problems people are experiencing with the 7.6 line of updates is limited to the top end models, from my current testing.
If things pop up, I will update, so far no issues,.