I just tested out livesplit on RE3 for the first time as I'm planning on learning the speedrun and it's automatically splitting correctly, but when it hits dialogue and cutscenes it doesn't pause the timer like I've seen in other runs. The timer also starts very early, before the first cutscene even loads up. What could be the reason for this if everything else with livesplit is working just fine?

You're most likely comparing against Real Time, make sure to compare against Game Time so that the script aligns with IGT.

ohhh I see what happened. I saw the thing by the activate button for auto splits that said "compare against game time" but it wasn't actually on, it was in a totally different menu. Thanks for the help :)