[Emulgator]

I have a ADVC-300, it does not offer any TBC tweaking.
Moreover, picture stability could indeed be worsened if any TBC from some feeding deck
(in my case for instance Panasonic NV-HS950) is on as well.
Different later decks (for instance the Panasonic DMR-EX95V) can have much better internal TBC than the former.
It seems as if the playback deck has indeed the most influence, I could not mend anything seriously with the ADVC-300.
In the beginning I even used the built-in Hardware filtering.
Then I began to learn AviSynth, and from then on I found it better to leave the built-in filters bypassed,
especially when attempting IVTC after capturing.
The only thing when capturing with ADVC-300 is that I might lift blacklevels and soften white peaks for clamped recordings.
In the end I will look for capturing uncompressed, because DCT blocks can be visible in noisy blacks...