Ok, well, I'll just die by running headfirst into mobs of enemies in order to gather them fast enough I guess then. I'm the first to defend Bungie and this game but when something isnt working great, it's not working great. The orbs disappear faster than you can shoot down the other enemies in the area...they really do disappear too quickly. It probably has to do with too many objects on screen slowing the game down, or some kind of coding issue that having them stay longer causes, but they literally disappear in what seems like 3 seconds and you miss half of them.