The latest builds makes graphics edges looks Pixelated + Blurry screen

[Henrik]

If you are talking about Spline upscaling, it was not quite doing the right thing before, and it should not really have made things noticeably better than just postprocessing off. Now it does the right thing but only at original PSP resolution. It's possible we could make it work for the final upscaling at other resolutions too but there seems to be little quality increase.

None of the other post processing shaders should have changed their behaviour, except the 5x one which was broken before... Which one are you using?