_,,,^..^,,,_ said:

Don't know if this is due to compression artifacts (even if I don't think so, because 20Mbps should be enough to avoid them), but it seems that the superresolution algorhythm you are using is not that effective... a simple avisynth bicubic upscale, using the compressed MKV SD video you provided, sharpened a bit, seems very similar...

http://screenshotcomparison.com/comparison/117604

what do you think?

here's a better comparison.

http://screenshotcomparison.com/comparison/117784

Since the artifacts look more like interlacing problems then blown up interlacing problems, eedi takes care of it easy enough. I also added a sharpening filter to try and match yours. Now the difference is incredibly subtle, I'd guess it's temporally finding noise and dithering it into smaller noise?.. though without a raw frame its hard to say, fake fine grain + recompression might look the same

edit: ignore any differences in sharpening