Gaming with 4k on Xbox One S

Although both the Xbox One S and the Xbox One X can both stream 4K, only the One X is capable of true 4K gaming. I would recommend the XBox One X over the XBox One S because it only one that can truly do 4K gaming! The XBox One S can upscale 1080p games
to 4K but isn’t a real 4K console, although it can play Blu-Ray in 4K. The XBox One X is the first console to truly be able to stream 4K gaming, plus it has a Ultra HD 4K Blu-ray player!

The HDMI IN on the XBOX ONE / ONE S / ONE X are all just 1080P there is no 4K pass through on those consoles.

The Xbox One S Supports 4K Bluray and 4K screen resolution - not 4K gaming

The Xbox One X Supports 4K Gaming, 4K Bluray and 4K screen resolution

- Game developer has to make the game 4K

- 4K pass-through is a hardware feature that does not exist within the console. You'd be better

off running your 4k Sky Q into the TV directly. (the xbox is doing what it's designed to do)

Xbox One and Xbox One S are 1080P Gaming

Xbox One S will play 4K Blu Ray's

Xbox One X will play Game in 4K if they are Enhanced with 4K Support + 4k Blu Ray support

They Xbox One X will also Upscale on a 1080p screen so you will see some benefit of the Xbox One X

Your information is not correct. Actually when you set the xbox one S console resolution to 4K UHD, everything on the console—Home, games, and apps—will display at 4K. 4K content is displayed in its native 4K resolution, and other content (like 1080p content)
is upscaled to 4K.

For more info:
support.xbox.com/.../4k-on-xbox-one-s

Here are helpful links about 4K HDR, Xbox One S Kinect.

4K HDR

support.xbox.com/.../troubleshooting-4K-and-HDR-on-xbox-one-s

support.xbox.com/.../tv-or-monitor-screen-is-blank-while-connected

support.xbox.com/.../4k-on-xbox-one-s

support.xbox.com/.../4k-on-xbox-one-s-technical-requirements

news.xbox.com/.../xbox-one-s-4k-hdr