Trial of Chaos - Crested Behemoth

I've been running Trials of Chaos back to back for a few days now and noticed that there's some visual effect/code/something happening that crashes the game which is specific to the crested behemoth. Not sure if it's a skill, death, AI, or what but seems to happen when he either charges up beam shot.

For what it's worth, could also be something to do with decompose on Corpsewade boots as I've come to suspect that something about the corpse removal or some such is what triggers the crash. It always hangs and tries to resolved the stutter/hang for a second and then just straight to desktop.

Happened just again on another run, tried to capture a screenshot where it hung but it was literally as the corpse of a crested behemoth was being decomposed.

Something about it causes the game to crash.