Impending doom Crashing my pc

Hey , i tried Impending doom the last couple of days and when i use awakened spellcascade my gpu fans go crazy , the heat is pretty normal at 78° celsius and it only happens when i use impending doom with tempchain + awakened spellcascade no other skill doesc this

got an 7800x3d + 4070 super , the fps also go from 239 capped to like low 60s while castin in my hideout

happens on every render type even when i cap them on 80fps it goes crazy from the first cast on