Who’s streaming 4K HDR10 from Amazon Prime Video?

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TL;DR? Having problems streaming most 4K titles and HDR never activates. Suggestions?

A few weeks ago my ancient behemoth 65” rear projection Mitsubishi TV moved on to the great beyond. Unfortunately, a couple weeks too late for me to snap up a Black Friday deal on a new TV, so I’ve been patiently waiting for a deal on a 65” 1080p dumb TV.

Then I tripped into a decent price on a 65” Vizio 4K (about $540). UHD, HDR10, streaming apps and SmartCast… all the bells and whistles you can find for under a thousand bucks.

I got it all set up yesterday and tried out the 4K capability streaming from Amazon Prime Video via the integrated app. Many titles Amazon specifically listed as 4K UHD won’t actually stream in 4K. A few exceptions: Specter (James Bond movie) will reliably hit 4K within a minute or two, Z (Prime Original series) will get there after a few minutes, Grand Tour eventually steps up to 4K, as does Le Mans. But most titles won’t ever stream more than 1080p.

Also, none of the HDR titles ever enable HDR. I’ve tried several, but no joy. Most won’t even hit UHD, but those that do never activate HDR.

Is anyone having any luck reliably streaming 4K? I suspected maybe my network wasn’t up to the task, but if that was the case it seems none of the UHD titles would hit 4K. But some titles will do 4K every time (within a minute or two).

On a side note, I queued up Spectre on the internal streaming app, and also on my Xbox One in 1080p. After 4K kicked in on the TV I queued the Xbox to the same scene and flipped between the two, comparing image quality. TBH, there’s a difference if you scrutinize, but 4K is not what I’d say is a remarkable improvement. I’m hoping HDR will tip the scales and will make a noticeable difference.

Anyone with 4K streaming experience, I’d appreciate hearing about how it’s going for you…