Ranged blight monsters are very dangerous

I didn't pay much attention to blight in 3.9. In 3.10 my very first blight encounter was just a nearly uninterrupted line (ie 'beam') of fire projectiles. The mobs didn't even have a chance to stack... they just spawned that close together.

This reminds me so much of old Devourer problems where a whole pack would spawn around you and attack at the same time. Now they do so staggered, so you have time to react. Unfortunately Blight brought this problem back in a nasty way since they can off screen and there are performance problems in heavy Blight encounters that make manual dodging and meaningful strategic movement difficult.