New question: some TVs only support 4K/HDR on certain inputs. Are you using the correct input for the X->Receiver->TV setup?
I know, dumb question, just looking at all possibilities.
First off, does your receiver support HDR pass-through? Second, are your HDMI cables all the right standard?
Those are the only two things that could be at issue.
Honestly, there's like maybe 5 games in that entire list that have 4K, HDR, and are interesting enough to play. And all except maybe Assassin's Creed Origins and Call of Duty WWII (I have no interest in CoD, but it probably looks/sounds great) are pretty old.
I'm honestly kind of surprised...
I think the price is too high to compete with the PS4 Pro (which is inferior overall but priced better for the market) but it is definitely powerful. That said, the early reviews say the biggest issue is the lack of games supporting the leap in performance over the One S. Loading times are...