As I said, I can only play at 1920x1080 or lower, there are no other options.
I can play all the games from the Microsoft Store at 4K, only have problems with this game.
I have the latest NVIDIA Drivers: 411.63
My game version is 1.187.963.2
My specs are:
CPU: AMD Ryzen 5 1600
GPU: NVIDIA GTX 1080 TI
RAM: 16 GB 3000 MHz
LG TV 4K
Is the native screen resolution “Desktop” set to 4K? Check Windows Display settings. Right click on Desktop and click Display Settings. Scroll down to “Resolution” and make sure 3840 x 2160 is selected. Then in game Video Selection screen your 3840 x 2160 should appear. Hope that helps. I’m running mine at 21.9 3840 x 1600 and works great.