My experience with HDR has been pretty abysmal on a $500 4K TV. Badly tuned HDR is way worse than no HDR at all.
I have 20/20 vision, and I really can't tell the difference between 1080p and 4K for video games and movies. I will never do below 4k again on a desktop, but 1080p is more than fine for a TV. Higher framerate makes a far bigger difference than higher resolution for video games too.