My game only seems to run in Borderless Window mode. Worse, it doesn't seem to let me scale the resolution of the game (I have a 4K naitve monitor, so the game always runs in 4K.) The only way to lower the resolution seems to be to use the resolution scaling option which is less than ideal since it only has 50% and 66% options.
Changing the Display Resolution doesn't do anything as far as I can tell. Performance and visual quality are identical.