Does 4K on xbox one x work on all games?

This might help:
https://support.xbox.com/en-US/games/game-setup/download-4k-game-content

This does not help. The "Download 4K game content" option only appears on non-4K Xbox's. This option is not available on the Xbox One X. In "theory," 4K content is downloaded to the Xbox One X by default. This in NOT the case
for my Xbox One X, however, as it does not download the 4K content for Quantum Break. All of my other 4K enhanced games work without a problem. Quantum Break is the only title that I have that refuses to grant me access to Xbox Enhanced content.

Hello,

Xbox One does not support 4K movies or games.

Xbox One S, supports 4K movies.

Xbox One X
supports 4K games and movies.

If you have 4K TV I recommend Xbox One X. If you have only Full HD TV, so Xbox One X can switch to Full HD mode. All the more power it can put into games.

There are over 130 games that are for the Xbox One X.

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)

Not all games, developer support is not across all games. (Almost) All first party titles are 4k.

Depends on the games you can look on the back and see if it supports 4k but if you do not have a 4k TV, I heard that that the X makes your games like 1080 HD or something like that.