FSRCNNX-Distort
For general infos see igv's release page.
These networks were trained with increased distortion and as a result remove quite a bit more compression artifacts than igv's. This also means that they aren't as sharp and will remove small details. Don't use these shaders for high quality footage.
The anime version offers even stronger compression artifact removal. It is not suited for real life content, unless you feel like your videos lack a certain pastel painting look.