Could a mod force 30 FPS during in-engine cutscenes?

Since my first ever BG2 playthrough I switched to playing at 60 FPS (double speed) just because it saves a lot of time over the full length of the game. However the downside to this is that in-engine cutscenes also play at 60 FPS but of course the voice acting doesn't so all lines end up getting cut off. Would it be possible for a mod to force 30 FPS during certain times like possibly whenever the player loses control of their character?