Anyway to remove the borders from windowed mode?

Heyo. Since I’ve come back to playing this, I’ve noticed 1 personal issue. When playing in windowed mode, there are these nasty black bars on each side of the game. Anyway to get rid of them other than playing in fullscreen? Only reason I don’t play in fullscreen is because the Microsoft Store games have an issue where if you alt + tab, your internet connection cuts off from the game.