A generally good article that may answer some questions (and raise others).
https://www.engadget.com/2017/04/11/rea ... ny-valley/
Near the end the author admits that Harmony had him hooked from startup to until the lip sync gave her away.
As she wakes from sleep and opens her heavy lids, I'm instantly mesmerized. Her eyes are incredibly realistic, a perfectly balanced hazel color with just the slightest hint of redness around the edges, mimicking blood vessels. When she blinks or smiles, her brows and the corners of her mouth move with such accuracy and agility that I hardly even notice them. If this were a real human, I wouldn't think twice. But Harmony isn't human.
My jaw falls slack and I feel a familiar tension creeping in my stomach. It's the same one I get as I approach the peak of a roller coaster, unsure of what terror lies on the other side. And then she opens her mouth; she begins to speak and I'm transported back to reality. Her jaw is jittery and the voice coming out of the small JBL Bluetooth speaker behind her doesn't sync with its movements.
Overall I think the whole article is positive and I think that even the final is pretty good since lipsync and audio in general will only improve with time. (or we can ask for a mute button so "words don't spoil the moment..." ) As to the uncanny valley everyone has a different reaction and threshold, just like roller coasters. I seem to remember a Davecat quote:"Yea, the uncanny valley ... I know it well. We have a vacation home there!"