Edit: Oh oh!! So after typing that up, I decided to check the steam forums again to see if others were having the problem I've been having. No such luck it seems but, someone was having an issue and another user suggested putting the game into win98 compatibility mode. So I figured what the heck I'll try that, I go to the .exe compat tab and noticed, even after a clean reinstall of the game it was already checked for win98 compat. So, I turned that off and boom, 60fps in game and cutscenes back to 24-30 fps now.
I don't remember ever turning that on, on the previous installation and I definitely didn't turn it on in this one, so why in the world would it be on.