There's a hidden cooldown, we all know that. In a game with unlimited sprint, we were rudely made aware of it's existence. You're about to die? Well, sorry, you just fired your weapon/melee'd/tapped the sprint button, so you can't sprint for 5 seconds. Then you die. You're playing Crucible and sprint into a room with a few enemy players? Sorry, but you'll have to WALK out of the room, because your unlimited sprint needs to cooldown. We need this fixed. Many times this hidden cooldown has gotten me killed by thralls, guardians in the crucible, nightfall, etc.