Are all of your other settings except for the first one Red Circles with the Slash? The one and only setting I have that is a Green Check Mark is the first one. Nothing else.
I too have the Yellow Triangle with Exclamation with the HDR. It is a bug I am guessing. The rest of the settings are a no go.
I am under the impression that means 4K BluRays are pointless for myself. Just simply being upscaled. Am I wrong here? I would love to be wrong, so someone please tell me that I am. But my understanding is without any of those other settings also green check marks, that means 4K UHD BluRays will not be displaying as they actually could, and should be, displaying.
As far as a 2TB HDD, I had an external drive with 2TB on my previous One, so that is not really a must have to me either. Finally 6 extra frames per second, while nice, is not something I personally care about.
So very cool you are happy with it. I was just sharing my opinion knowing what TV he has that I also have, I am not really sure it is worth picking up right now.
EDIT - And again, to reiterate, it is my own damn fault. A little research would have went a long way. I just assumed a TV from last year would support everything except HDR.