Unlike the other dungeons, Forest Temple is just FLOODED with all of these small cutscenes.
EVERY rock you bomb, there's a cutscene and a fanfare. Every room has at least 1. The dungeon should take you 20-30 minutes with casual play, but it takes what feels like an hour because of all the unnecessary small cutscenes.
When you play the other dungeons, you'll see what I'm talking about with how there's way less of these in them.