I think I figured out the issue! My problem: FPS drops frorm like 60 to around 40 every 5-10 seconds. Only happened on destiny and no other game. Too consistent so I thought it was to do with my memory, but alas it wasn't. Turns out it was STEAM. Yes the steam friendslist ingame refreshes every 5-10 seconds, and the more friends you have the more severe this problem will be! So I just set my steam to offline before starting up the game and it fixed the stutters. I could still join my friends using the direct join command so it wasn't a big deal. It reminded me of day 1 steam launch when people with large steam friends lists couldnt connect, so I immediately connected the dots and it all made sense. So I think a possible permanant fix for this is to remove people from your steams friends list. P.S. I have 450 steam friends.