I rode for the second time yesterday. Finally. Single rider seems to be closed off and on and always when I'm around, so I got in the normal line with a 120 min posted wait. None of the uncovered queue was being used, and only about half the covered outside queue (it didn't go as far as the prop mine car). The line moved quickly for about 45 minutes, then the ride had a few stops. Took about an hour and 15 minutes to get into the lobby. Line stopped again just after the security photo for about 30 minutes. There were at least 50 people in the "express" line with those printed express pass things. So about 1:45 total to get to the Bill Weasley preshow door. The posted wait time ended up being accurate, but without the downtime it would have been closer to 70 minutes. And of course with more or longer breakdowns it could have been worse. I wasn't timing all this exactly, but it's within 10 minutes or so of being correct going by my texted status updates to my wife.
If they can keep things in this range I have no problem with the wait. My first ride was early entry, which with ride breakdowns can still be a crapshoot (in my case I spent an hour at glasses distribution, and got off the ride at 9:15am after having arrived at the gate at 5:55am). I also want to congratulate Universal for having the guts to not have express for things like this. The psychological impact of a line that actually moves cannot be underestimated.
Overall I did enjoy the second ride more. The preshow and elevator were not crammed to capacity as on my first ride, which I hope is the correct procedure. I could hear and see everything this time. Speaking of the elevator, I thought it was amusing that my 6 year old daughter came up with the idea on her own that it should let you off at the level of the loading platform instead of immediately making you walk up the steps. Both sides were loading, although the dispatch time is so slow you end up staring at the other car at the merge point for a few minutes. One big glitch: the screen after the drop was in 2D (no Dolby 3D color wheel in the projection path). The moving screen worked well this time (no smoke my first time, clearly a gaping hole), but I'm still waiting for that elusive perfect ride through.