Well, well, well. I have discovered the issue. With this black image open, I decided to test some of the settings in the OSD. It turns out, when I have Asus "Smart" Contrast Ratio turned on, it makes the screen much darker and makes this happen for whatever reason. It also turns out, that when I actually know what's wrong with it, I find other threads talking about the issue.
Long story short, if this is happening to anyone else, and you have an Asus monitor. Try turning ASCR off in your OSD.
Long story short, if this is happening to anyone else, and you have an Asus monitor. Try turning ASCR off in your OSD.