I was checking out the visual settings and switched from "Use my monitors resolution " to custom resolution and now I cannot revert it back to my monitors resolution. I tried reselecting "Use my monitors resolution" but it will not apply. My monitor is a 3440 x 1440 120hz which allowed me to play in fullscreen. Now I'm stuck at 2560 x 1440 windowed mode.
@Losinmashyt Log out, then log in and change the visual settings on the Character Select screen!