10 points
That’s not inherent to “AI upscaling” as a process. ESRGAN for example is pretty good at upscaling pictures while keeping the quality.
1 point
I’ve tried upscaling with ESRGAN as well and it has similar problems. It messes with the original textures too much. For example, it made carpet look like a solid surface. Skin looks too smooth and shiny. That kind of thing.
1 point