Apologies for no footage but there is a specific attack with the Fragmented One that looks like this (with bloom disabled) in that it envelops things as if it's some black hole.
With bloom enabled, the so called "NaN issue" where the black boxes cover the screen while also moving with the screen.
I am using a NVIDIA GTX 960. All my settings are either high or medium. Particles and GPU particles is set to high but happens regardless of level.