I did the BarBri lecture, and then the next week spend a bit of Thursday and Friday looking at questions. I had already taken PR, but I agree with the others that the class doesn't necessarily prepare you for the exam. I don't think I ever worried about timed conditions...I'd save that stress for the MBE.
I know a lot of people who walked out feeling that they hadn't passed. ('Passed' being relative, as it's really just how your score compares to your jurisdiction.) A few were right, but most did well enough the first time to not retake.