Try whether the Vapoursynth Preview does show the whole clip, if not, try whether disabling 'Prefer BestSource' helps.
If it does, and you can share a link to a smaller clip, which allows reproducing the problem, I could send it to the author of BestSource to look into it.
Cu Selur
If it does, and you can share a link to a smaller clip, which allows reproducing the problem, I could send it to the author of BestSource to look into it.
Cu Selur
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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.