Moved to the correct forum.
It's almost impossible for the game to be incorrect when giving its screen resolution because it's literally counting the pixels available. However, just because your computer tells you you are using 1920x1080 doesn't mean you are because it doesn't take into account magnification or other effects.
The most likely cause of your issue is therefore that you have some kind of screen magnification in use, and therefore are actually using far less than the 1920x1080 that you have it set as. You would need to turn off the magnification to bring yourself back above the minimum game limit.
Designer of TEW, WMMA, WreSpi, and Comic Book Hero