Is Bungie reducing XP gains for some activities? But that makes little sense, as you would imagine that if you earn (X) XP that your XP bar would increase by (X) XP. Over the course of the next week, we will be watching and reviewing XP game data to ensure that these changes meet our expectations, as well as yours. Past this, fans have even pointed out that something like Bungie’s “double XP” deal with specialized Pop Tarts packages was technically having its effectiveness reduced because of the XP scaling issue. The same goes for “double XP” weekends or XP bonus events like Clarion Calls, which is in part what sparked this investigation.

Source: Forbes November 25, 2017 15:13 UTC