Dolby vision gaming Vs hdr10 gaming

Personally, I just set my Xbox up and used whatever it recommended. This article is rather comprehensive on HDR vs HDR10+ vs Dolby Vision:

https://www.rtings.com/tv/learn/hdr10-vs-dolby-vision

VRR (Variable Refresh Rate) should be enabled as it stops screen tearing and stuttering.

As to 120Hz, that depends on the game...most games don't have a 120fps option when used on Xbox so the 120Hz is irrelevant. I initially had my Series X set for 120Hz when I first got it, despite the main game I played (Forza Horizon 5) being limited to 60fps...when I swtiched the TV to 60Hz as I added a capture card which only supports 60, it made no visible difference. You can always experiment with it...try games with it set at 120Hz and 60Hz, try changing in-game options etc

Frame rate(fps) and Hz are two different things! See https://www.cnet.com/news/ultra-hd-4k-tv-refresh-rates/ . It will explain well!

Make sure your 4K TV has HDR10! That is the standard for Xbox One X! Some have HDR, but use lower/old standard(HDR8). Dolby Vision has their own(HDR12)-HDR10+2(metadata), better but DV charges a fee! See...

https://www.cnet.com/news/hdr10-vs-dolby-vision-vs-hlg-how-do-hdr-formats-compare/

FYI!

I was looking at Samsung MU6300 until I saw above link. Now with prices dropping for 4KTV's I went with MU8000!!! LOVE IT!!! (looked at Sony XBR900E-has Dolby Vision)

Your right that Dolby Vision is better than HDR10, however the differences are marginal at best, and only true TV calibrators will be able to see the difference.

The reason Microsoft went with HDR10 and not Dolby Vision is that HDR10 is open, it doesn't cost anything to make a TV HDR10 compatible, all you have to do is meat the specifications and your good to go.

Dolby Vision on the other hand costs money, the vast majority of cheaper HDR TV's are going with HDR10 and only the more expensive "premium" TV's have Dolby Vision and HDR10.

On a side note, you may want to look at not getting an LG B7/C7 and using it with you soundbar, I've read loads of scare stories of people using these TV's with a soundbar and getting pretty bad lip synch issues, just a warning.

Unless your going to fork over 1000s of dollars to get 1 of the 5 manufacturers that have 2.1. Dolby vision will not work with ALLM.

Performance of hdr10 is not relevant nor is ALLM.

Dolby vision does not work with ALLM. This is confirmed that this is by design. You choose between the higher fidelity of Dolby vision over Game mode ALLM.

X1X is ONLY HDR10 compatible!!! Dolby Vision(HDR12) is NOT supported!!!