Yeah, most of the open source models that do the upscaling were meant for anime waifus. Also, cartoons don’t often have things out of focus in a frame like live action does.

I’ve tried upscaling an old cartoon from 1080p to 4k using some open source models and it worked quite well. However when I tried to add frames with interpolation, it added a bunch of frames that were quite horrific, especially during quick movements.

I also tried to upcale a 90s live action class so I could see some of the details the instructor was showing. It was not near as good and even without frame interpolation, there were a bunch of new artifact glitches that were added so I didn’t keep that version.