Despite recent patch notes about a 'possible fix' for the Firefly Perk weapon perk effect crashing the game It just happened to me again Day1 Vanilla Destiny never had this problem how hard is it to compare to that old working code and see what changes your programmers made to the system that is causing the crash? Hint from a Retired Programmer: It's obviously a buffer overflow, in whatever queue you use to track dead NPCs or possibly weapon special effect events. So that looking over that area of code.