Slave Masters Sandstorm invisible on lower FX settings

[Kapo]

NAME: see title

DESCRIPTION: On lower graphic settings, when you cast Sandstorm as a player, everything is fine and visible. But the Slavemasters (Boss) Sandstorm gets invisible - on the Slave Master Map and on rPVE.

REPRODUCIBILITY: Set Graphics to low, meet Slave Master, don't kill him too fast 😃

SCREENSHOT/VIDEO: n/a

LOG: n/a

ADDITIONAL INFORMATION: Can be of importance for newer players. You die and you have no idea why. If you already know what you are dealing with, he makes the animation of casting it, and then you just guesstimate another position to move to.