Hate to bump my own thread, but I still haven't found a fix for this. I made it so my game stretches without any problems, but it gets REALLY slow and laggy if the resolution is above 1080p. Even in the example Joannesalfa showed, the application just stretches itself.
I'm thinking of making a launcher using another software so I can change the resolution before starting the game, then changing it back when the game is closed (somehow), but that would be my last resort...
@ashley any idea about what to do? I'm desperate!