SUMMONER "rotation/priority"

[Koyuki38]

When do you use tri-disaster ?

Do you open with 3 Fester or with 3 different Aether spells ?

Currently, i'm not sure if it's better to use Tri-disacter right at beginig of the DWT, or 1 before and 1 30 sec later (but we loose +10% buff), or trying never clip the Tr-disaster buff (ie : not casting Tri-Disaster at the beginning of the DWT while another Tri-Disaster is applied).
Make the best of Tri-disaster seems hard figure.

For now i'm ilvl 300 with a 290 Weap and i definitely can't beat Suzano Dummy, while someone has told he did it with a 290 weap with 10sec remaining on the timer.
(without saying the other part of his equipment)