Sync seemed a little loose at times when I also watched it on my Apple TV but when I watch using my TVs internal Android app I don't see any lip flap in the same scenes.
And the Enterprise leaving drydock in The Director's Edition is the best that shot has ever looked and is finally complete with the Earth element added and no support arm visible.
Because of the rushed post-production in 1979 due to the firing of the original effects house and the locked-in release date, there simply wasn't time to complete all of the shots. This was an opportunity to go in and finish those shots that were planned but never finished.
I went last night. It was an overwhelming experience. The presentation was top-notch and the crowd broke out into applause several times. I couldn't be happier for Mike, Daren and Dave.