Risk Runner back in the day would cause an error code "Bird" during the outbreak perfected mission with the servitor and shanks when you shot them with risk runner and chained them all. Well it is STILL a thing today almost 2 years later. I hope someone sees this because I've figured out what causes this to happen. It's quite simple to what causes it but it will error code Bird you when Risk Runner chains A LOT between enemies and the game can't keep up and error codes you it seems. Really hope a bungie employee sees this because this is quite annoying to deal with but atleast the cause has been figured out