Issue with Rain of Arrows Build. Maybe bug?

Went from one shotting Urivar to barely being able to do the fight at all. Started after a pretty major gear overhaul when umbrous and arrow storm aspects both finally dropped.

Tempered +dmg per dark shroud on weapons and gloves. The usual. Should have been a huge dmg upgrade, instead, not only are the arrow storms hits exponentially weaker, they’re proccing less often.

Anybody have an idea on what could have happened? If you’re running the build, have you noticed a difference today? Any insight would be greatly appreciated.