We're having continuing issues with a roku permiere+, yamaha rcvr, Smasung TV. Problem was on YouTube though.
Replaced the Roku with a simple (non 4K) unit. The HDCP issue is gone, but now the streams/buffering are an issue (no hardwire network just WiFi)
I'm going to try an Atlona EDID fixer gizmo (sorry can't remember the model number right now) It's supposed to be delivered today so we'll see.
I'm Not an engineer, but I play one on TV. My handle is Tweety but I have nothing to do with the organization of similar name. I just had a really big head as a child so folks called me tweety bird.
