Hey @DjangoUntrained! I’m happy you got many suggestions of things to try in the meantime - so thanks everyone.
I wanted to add that it would be helpful if you watched /listened to your own videos in slow motion to actually hear what types of sync mistakes you are making. I think it’s important for you to figure out what exactly you are trying to correct and how to hear correct VS incorrect while you are playing. I do not think you’ll need to micromanage your finger motions, they’ll probably sort themselves out as you develop a better awareness of what you are doing / what you sound like.
Of course, if you find yourself stuck we can look again at the details.
FYI analysing your videos more carefully is also on my to do list, later we can compare notes! Just give me a few days as tomorrow we’ll attempt to travel back home from Italy with the 2 small daughters, might take us a couple of days to recover from the stresses of the trip 
If you think about the effect of tapping the string down, it will only be fretted for a very tiny fraction of a second. This will make it hard to sync as well as cutting the notes short. Legato playing will force you to “stick” longer to get the notes to sound out and should help you see how to add picking in such a way that the notes are fretted longer. But you need to give yourself a bigger time window by fretting the string vs tapping it down and immediately releasing it, and the left-hand fingers have to move first to push the string down and get it fretted. If you start the motions at the exact same time, the pick will win, hence the mental focus on the left hand to correct this. Good luck, and give us an update some day.
