Yup its maps. Twister wiz is an AoE build so u need to fight in density for high clears…
You’re probably at the point where u need to fish for GRs. Bad map, bad mobs then exit… Good map, bad mobs (like Morlu Legionaires or Falleb) then exit… Good mobs, bad maps, your choice to exit or try.
As for Aquilas, ur generally not gonna keep full AP to proc it often and especially with Disintegrate ur gonna drain AP. Only time i used Disintegrate is with non archon LoD Star Pact… But u need high paragons and full augments to run that
If u need extra damage reduction use Arcane Torrent/Flame Ward for damage reduction. Arcane Torrebt was the best channeling skill by far.
Also try rolling life per hit on ur bracers… Lot of people really like that instad of vitality. So elemental damage, int, lph, and crit.
Also try out the Twister set too.