It’s no secret that we haven’t been blown away by AMD’s FSR 1.0. It’s mostly a simple post-processing filter that attempts to make a blurry, low-resolution image look clearer by applying a sharpening filter. It’s better than a linear upscale, but pales in comparison to more advanced upscaler offerings.

Still, the technique has its advantages;

Source: Hot Hardware – AMD Claims FSR 2.0 Image Quality Can Beat Native Resolution Without Machine Learning