The dialogue, a lot of useless fluff dialogues that takes extra 2 seconds for the characters to animate. If there’s 10 people in the scene, then those 10 feel the need to chime in to say something frivolous.
I haven't played the game, so I don't know how that's handled exactly, but I played a bunch of CRPGs these last few months and I wish the companions in those games were more like this. 99% of the time it's just the MC talking with one or two other people, and it's just so boring.
The constant interruption of the flow. You gained control of your character, moved to main/side quest point, cutscene, walked forward 10 steps, another cutscene. And the problem is, most cutscenes are just insubstantial.
This is just super annoying. I'm going through the same thing in Crisis Core right now, where you're interrupted by a tiny cutscene every few steps in the main missions. Just make one longer cutscene, or tell me whatever useless thing you wanted to say, while I'm playing.
They had expectations like Square Enix for their western titles. Anything below 10 million sales or something is a flop.