Completely unplayable on my system. There is no provision for changing the screen resolution, (locked at 4K) and all the buttons and menus are so tiny, it's impossible to read them without leaning my face right up to the screen. Add to that, the popup tags that tell you what the button is for are so tiny that they're completely covered up by the cursor.
I'd love a patch that scales up the text and menus to the point where I don't need binoculars to read them.

Go to Settings > Video tab. Change the Window Mode from "Borderless" to "Fullscreen". Now you'll be able to change your resolution. Also, in the same place, there's a UI Scale (experimental) option. Move the slider to adjust the size of your interface. Make sure to restart the game to see any changes.

Hope this helps!