The game refuses to render resolutions above 1080p within the display confinements. My display has a native res of 1440p, but that and 4k via Nvidia's DSR stretches the viewport outside of the display area. Tried overriding high DPI scaling via the compatibility tab for the executables (64 and 32 bit), drivers are set to scale to the aspect ratio.
If you override the high DPI setting and set it to the application 4k renders the menus properly (w/o this override the menus are also stretched beyond the display borders), but not otherwise.