Why can't I play starfiled on a Xbox one X if the system is 4k compatible?

The ability to output 4K video is only a small part of the puzzle

The CPu and GPU of series consoles is far more powerful than any Xbox One. The Series S, while technically less powerful than the one x, has a far far more powerful cpu, the same one in the Series X

If you want to see a 4K Movies (streaming/disc) you will need to have a 4K TV. (With Xbox One S and X)

Also if you want to play a game on 4K the game need to be 4K compatible and a 4K TV (only with Xbox One X)

Regards!

The Xbox One can't play games at 4K, You need to have the Xbox One X and a 4K TV or a 4K Monitor to get to play games at 4K and games that show Xbox One X Enhanced on them.

It all depends on what xbox you have a if you have a 4k tv compatible with xbox one x 4k because I take 4k screenshots all the time. And it also depends on your settings

Xbox One X is worth getting if you have everything that would benefit the system. If you get the S it just supports the 4K not play in 4K.