To all the people dying to the astral flow, try increasing your damage output, the optimal jumps you want is 2 or less. If she jumps more than that you are pretty much doing the fight wrong because every time she jumps and uses her wide range AoE its like multiple plumes blowing up on each pillar. Any reasonable DD should be able to get down plumes two times.

If you can prevent her from jumping more than twice and you can get the plumes down flawlessly each time they jump (Which any half decent group should be able to ) You will have all 4 pillars maxed out going into astral flow plumes. This gives you alot of breathing room because even if you have multiple plumes blow up on 2-3 pillars everyone in the party will survive if they have a stoneskin up.

And that is it for todays rendition of the "Requiem is better than everyone else that plays this game so listen to his tips and tricks" happy hour