Both Snook and the production are technically impressive, but dramatically this did very little for me. The little winking bits--where the recorded version of her tries picking up the narration when the live version does, when the "fireworks" backdrop fell on her when her head was in the little playhouse enacting the meeting with Sybil--were overly cutesy and made it hard to get invested in the story, even when it became overly serious.
I was ready for it to be over an hour before it was, and the section in the woods and the final bit with Dorian and the painting both went on forever. I didn't think I remembered the story going in, remembered the ending as it started to get there, and started thinking, "Good god, do it already!" as it went on and on.
I'm sure some will argue, and have, that all the screens and technical impressiveness makes a statement about artifice and how we present ourselves to the world. All I got was a show that was impressive visually and empty (if not warped and evil) on the inside, like Dorian Gray? So maybe it succeeds on those terms. Otherwise the main purpose seems to be to watch Sarah Snook work hard, which she does, and excellently so.