The syncing in FCPX doesn’t work at all… I’ve tried in FCPX and in Pluraleyes 3… it was in Pluraleyes 3 that I discovered the audio issue. In that program is shows no audio, hence no sync.
Whenever I try to sync in FCPX it doesn’t work at all. However if I convert to transcoded media and then do pluraleyes on that footage it works… so I don’t think its an audio quality issue.