Why I turned it off in ten minutes. There are two problems with this movie and they are significant. First of all: in the first 10 minutes, she yells "put your arms up, put your hands in the air." At least a dozen times. Over and over and over.
If you have to tell people to do that every 40 seconds, then your performance is completely failing. If you can't make them organically put their hands in the air, that's a huge problem with the performance and production. And worse, it completely fails on a television screen at home. You can't really TELL people to have a great time at your concert over and over. Either you make it happen or you don't.
Smaller problem was that for the first 10 minutes we barely even see gaga. She's in some Fritz Lang Metropolis/Hungarian brutalist sculptural prison and we can't even see her. You needed to open with behind the scenes footage of her up close, make it personal, give the home viewer bonus behind the scenes access. THEN we would be ok waiting a while to really see her again.
So, may have been a good concert, but as a film it completely fails.