Not sure if this is a bug or not, but this has been happening the past three days to my friend and I as we constantly farm the Red Storm to get a thousand swirling chaos to summon the purges for tier four thralls. When we first enter the storm there’s almost nothing, maybe one or two mobs already spawned in, and we roam for about five minutes getting a random lightning spawn here and there. Then it starts to ramp up maybe we get three spawns and kill them and get two or three more it’s easily manageable. Out of no where there will be about seventy spawns about three seconds apart that summon up to five in each lightning strike with literally hundreds of mobs chasing us. Here’s what we managed to capture as we stood on rocks so they couldn’t hit us as our thralls unfortunately didn’t make it.
Absolute insanity, we are thinking about going full bow builds and just mowing them down and farming them once the storm ends because trying to fight that is instant death. You get surrounded stopping you from moving and hit so many times you can’t even react.