I tried using Borderless Gaming to run PSO2 at 1080p on my new 1440p monitor, but the UI was all pretty blurry.

The in-game resolution setting isn't directly customizable, you only get a 50% setting and a 67% setting. Since 1080p is 75% of 1440p, I'd be running BELOW 1080p at that point so I didn't want that.

Normally, PSO2 has an absolutely TRASH DLSS setting, I guess it just hasn't been updated in years. I tried to get the newest Preset K running but it turned the game into liquid because it doesn't use a transformer model. The newest Preset A works pretty well but it really fucks with particles, leaves massive trails which is annoying.

FSR 1.0 (the game doesn't support anything higher) doesn't have trails, but the image is less temporally stable and it sharpens everything too much.

I'm so glad that the game I play the most often THAT'S STILL ACTIVE BTW give you fuck all for upscaling capability. The best way for me to play remains at 1080p on an actual 1080p monitor. I'm not going to just keep that monitor for one game though, that's retarded.