The Lightblinded Vanguard encounter is a step above the previous bosses in Voidspire, with many guilds opting to stack select classes. Marksmanship Hunters and Augmentation Evokers excel at the damage check on this encounter, due to the unique damage profile of three-target cleave. The class balance of three target cleave isn't very balanced, and has made this a very difficult boss for groups without these classes.
On the weekly reset, an unannounced hotfix has been pushed to live servers which nerfs the DPS check on the Mythic Paladins encounter.
Health of all targets reduced by 5%.
Commander Venel Lightblood - Health reduced to 314M (was 331M)
General Amias Bellamy - Health reduced to 348M (was 367M)
War Chaplain Senn - Health reduced to 298M (was 314M)
This should make it slightly easier to complete the encounter, in addition to the 1% damage buff that players are getting this week.
