a. Avisynth isn't as good as Vapoursynth in regard of threading
b. TemporalDegrain and TemporalDegrain2 are not fast to begin with especially on higher resolutions (+ your settings and Despor&SpotRemover)
c. 'QTGMC(Preset="Slow", ediThreads=2)' is slow,...
d. jumping inside uncompressed YUV is slow too
=> what did you expect
b. TemporalDegrain and TemporalDegrain2 are not fast to begin with especially on higher resolutions (+ your settings and Despor&SpotRemover)
c. 'QTGMC(Preset="Slow", ediThreads=2)' is slow,...
d. jumping inside uncompressed YUV is slow too
=> what did you expect

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Dev versions are in the 'experimental'-folder of my GoogleDrive, which is linked on the download page.
Dev versions are in the 'experimental'-folder of my GoogleDrive, which is linked on the download page.