Sorry to bump this, but did anyone notice the Xbox One X version of this game is ALWAYS running in 4K? Even if you connect it to a 1080P display, the game runs in 4K and downscales to 1080P.
You can easily confirm this by setting the GUI to small or medium (not 4K small or 4K medium).
It makes the graphics look pretty good because it sort of anti aliases everything this way. But it sucks, also, because you have to run the GUI at 4K medium or 4K large in order to read anything. (Which still have bugged positions on things like map coordinates, etc.)