Neogenic Nightmare Chapter 11: Tablet of Time - S2-E9
Audio problem: When Smythe is saying "Now I've got you!", his mouth movement does not match the words whatsoever. He even opens and closes his mouth several times on the word "now" alone.
Neogenic Nightmare Chapter 5: Mutants Revenge - S2-E5
Audio problem: When Wolverine says "I'm tired of being diplomatic," his mouth is closed for the word "being." (00:02:00)
Neogenic Nightmare Chapter 4: The Mutant Agenda - S2-E4
Audio problem: When Hobgoblin says "I don't want to hurt him," his mouth stays open at the end of the line. It's not possible to say "him" without pressing your lips together. (00:17:40)
Neogenic Nightmare Chapter 4: The Mutant Agenda - S2-E4
Audio problem: When Spider-Man is saying to Beast "I'm not sure I still am," Beast is the one mouthing the last three words in the line. (00:09:25)