Hope this is not forbidden - we (two-person core team from Bulgaria) are releasing our Xbox One game... today. The game is called Elea (it is a first-person old-school sci-fi adventure/walking sim) and have a full Xbox One X support. I think the fans of writers like Stanislaw Lem and Arthur Clarke can potentially appreciate the game for what and how the narrative is presented.
The game is using Unreal 4 and it is also console exclusive to Xbox. For both versions, we are using dynamic resolution, but on X we can hit native 4K in Quality mode at a very steady 30FPS (the game is using fully dynamic lighting model - there isn't any static light in the game at all). Performance mode is also using dynamic resolution, but the framerate is targeting 60FPS (so overall the resolution is lower).
Compared to the original Xbox One, X version is using better shadows, better AA, better anisotropic filtering, far better screen space reflections, and post-process profile.
We made a specific profile for the Xbox One X version, tailored to the X hardware and it is very close to ultra settings on PC. In Performance mode, we are lowering just the resolution (for a very steady 60FPS, minus when the game is streaming higher chunks of data and when we "autosave") and nothing else. All the fx, shadows and so one are the same as in the Quality mode.
So I bought this to support you and generally acknowledge your presence here. I quite like the narrative so far but visually it's almost unplayable. The chromatic aberration is painful and I'm not sure if you realised but on a 4k screen the text is so small it is unreadable :(
The textures and effects look good from what I can tell and I love the sound effects but can't recommend it until a CA toggle is added and the font is enlarged.