In the latest server-side update, we’ve made some notable changes to the loot drop rate in specific scenarios, which will take effect immediately in a server-side tuning update (i.e. you will not need to download anything.)
These changes include:
Masterwork & Legendary drop rates have been increased for Grandmaster 2 and Grandmaster 3 difficulty levels.
Masterwork & Legendary drop rates have been increased for harder enemies at all difficulty levels. This includes: Legendary Titan, Epic Titan, Legendary Fury, Legendary Acid Ursix and Legendary Luminary Elder.