HDR/Dolby Vision within the main menu?

I would hold off just a little while longer for a 4K TV. There are competing standards for HDR, with the two main ones being HDR-10 and Dolby Vision. The difference between them being the colour depth and peak brightness. HDR-10 is the standard
chosen for UHD Blu-rays. Dolby Vision is the more advanced of the two but requires more processing hardware. Dolby Vision supports HDR-10 by default, but not the other way round.

Hi

If your console is up to date it should work.

Xbox One Dolby Vision HDR - Everything you should know:

https://www.windowscentral.com/xbox-one-dolby-vision

How to use Dolby Vision HDR on Xbox One:

https://www.windowscentral.com/xbox-one-enable-dolby-vision

On your console display settings, is HDR and Dolby Vision enabled?

Most people that get flickers on the screen (both playing or only on the dashboard) with Dolby Vision on is because both HDR and Dolby Vision are enabled at the same time.

Just try to turn HDR off and see if it solves your problem. If it does, unfortunately we will not be able to do much about it. It's a bug reported by some people and the only option would be use HDR or Dolby Vision, not both at the same time

But know that HDR and Dolby Vision are two different, incompatible, color schemes for UHD TV sets. Most support HDR but some support Dolby Vision. There are a couple of websites I check for this kind of tech talk but I don't think we csn post links to
outside sites here. Most UHD tvs support HDR 10 but I've heard Dolby Vision is better. Xbox One does not support Dolby Vision, just HDR 10.

Of course the Blu-Ray disks I'm using are UHD and have Dolby Vision.

Dolby Vision is enabled on Xbox One X settings, TV HDMI ports are in Enhanced mode (4:4:4 4K/UHD HDR 60Hz), and the TV test (that can be found inside Xbox menu) returns all green ticks for my Xbox-to-TV connection.

As said, Dolby Vision works with all streaming apps... but not when playing Blu-Ray UHD Dolby Vision disks.