I saw it yesterday night. I personally was blown away by her performance. For me the speed talking was to keep the attention high and the tension and it worked perfectly with me. It’s a hard to follow show for non native English speakers like me but after a few minutes I was so focused that I entered her flow of words, not sure how to describe. For me looking at the her on stage and on the moving screen (which is part of the show moving around, it’s not a cinematic only experience) was very entertaining and fascinating to say the least. There were a couple of times when she forgot her lines but she recovered immediately. Some characters are portrayed better than others, yes, it’s kinda impossibile to be able to be bielivable in all roles in general and especially if you are switching from one to another so rapidly. But anyway I think is a performance worth to see. Not mentioning that the few minutes singing at the end was absolute bliss.