Hello, I'm using Blender 5.2 with PSX Retro Tools 1.7.10.
It seems that Pixel Perfect doesn't match the output resolution. I'm using a resolution of 360 × 640 with 3× upscaling, but the output is still 720 × 1280 instead of the expected 1080 × 1920.
(I was going to upload a screenshot, but for some reason it isn't working.)