A fast pace?
Dressrosa is literally the longest One Piece arc ever. "Fast pace" is the last word I'd use to describe it. But I think the root problem is that Oda just tried to fit too much stuff into the arc.
To much focus on fodder and random characters and not enough of the Straw Hats. Like the other chapter Robin was about to shine right? Nope back up for whats his name