I had a blast in Uldum. The cutscenes seemed just fine. Granted, mine didn't bug. I also read very fast, but wasn't annoyed by the pace - again, maybe it's because they didn't bug.

My complaints with Uldum were the quest layouts and technical issues. The quests, especially once you get into the war effort, have you ping-pinging all over the zone. If you stay in one area to finish up a segment, often I found I'd forget what the setup was for some other group. I'm not advocating Wrath-style hierarchical quest hubs, but I would appreciate a little bit less bouncy. This is the only zone I've noticed this with so far.

A lot of the quests have technical issues. For instance when you have the 'invisibility' widget and need to sabotage the blasting powder. It isn't invisibility, it's a stealth. If you've played a stealther before, you're okay. If you haven't, it could be quite hard to figure out the aggro radius on your item-granted stealth.

The battle with the big obsidian guardian and Schnottz's troops is pretty confusing. The supply carriers that carry exploding boxes hint that maybe those have to be used to kill the guardian - not so. You also can mount up and fly to the walls, which I did to observe from a safe distance to figure out what was going on and how to kill the thing - however when the shadow blasts come down, you can't see the shadow they cast on the ground or the rune where they'll hit, but sitting the wall you're in their area of effect and can be catapulted off the wall to a rather nasty death below (plus you get the warning AFTER they hit the wall and you're sailing away off the cliff since the warning is timed for a floor impact).

There were a few other such problems with Uldum, but among the list of difficulties I had there, I wouldn't list cutscenes.