There's one important manufacturer missing there...for the piece in the middle that everything works without.
Have you made any progress, or just going to live with it?
Edit: "4K Mode1 in Advanced Setup" is what most people say, might work for you too. I have no idea what it means...and just that you apparently have to go to a bit of "effort" to get into advanced setup mode. There was the same prob with Yamaha AVRs and PS4 Pro with 4K+HDR, so more info re that combo.
Yamaha is next on my list