Happened twice in a row now. Similar to this thread, but can happen even more randomly. Seems tied to elemental effects and explosions (including enemy projectiles).
Haven’t run the Slaughterstar before now. Never had this issue in the Circles of Slaughter. Not really fussed on repeating it if I can’t even get past the first round.
i5-3570k (CPU minimum, I know, but safely OC’d to roughly 3.8GHz by the BIOS)
24GB DDR3 RAM
GeForce 1070 GTX
OS on an SSD, game running from a 5200RPM HDD.