Dissidia 012: Duodecim Final Fantasy

[Gazmanafc]

I doubt this is the emulator and just how the game is, you probably never noticed on original PSP hardware because the screen was much tinier, but now that the picture is huge you see that the lip sync is terrible

It's the emulator. While there wasn't any proper lip sync to speak of, at least the characters's mouths opened and closed to symbolise that they were talking in cutscenes. Here it's just their chins bobbing up and down.

It could also be some issue with the vertex cache, try turning it off and see if the lips move (however, this will lead to worse performance).

Nope. I just gave that a shot and no dice.