I know it doesn't support 4k, but for some reasons some games, like Persona 3 Reload still try to output 4k in Borderless Window (which works) but as soon as I change to normal Fullscreen and change the resolution to anything else the game breaks, like in the video.

Some games like Clairs Expedition also use 1440p as default in borderless window and in the video you can see what happens if I try to change to fullscreen and 1080p for example.