Disclaimer: I am in no way claiming this is possible as this is only an idea/speculation. I think the game needs an update for Xbox One X due to the X's increase power potential. I think we should be able to squeeze out a larger draw distance, more FPS and a higher resolution on the X compared to the S and Original consoles.
The game already runs a heck of a lot better on the One X, I'd imagine the enhancement patch will launch later in the year.
I was interested in buying an Xbox One X just to get smoother framerates. The difference is night and day. But I feel we're so close to the next generation of consoles, and for ~$480 (without tax), it may not be worth it. :S
You should wait for the Series X That’s my advice to you If you get the One X your basically waisting £399 to a console that will come out in a few months.