Suyin's face as she talked to Bataar. I've noticed it sporadically this season, actually. The animation also seems… not worse, per se. A little choppier, maybe.

Surely that's the point of a 'whale' moment? If she didn't get her powers back/survive due to being the hero… well, she would die/lose her powers. Which sounds obvious, but that's the point of the trope

Korra losing her bending is a pretty damn big moment, hmm? Which she only circumvented because she is the avatar…