100% crash rate when entering boss room in trial of sekhamas.

When I enter the Trial of Sekhamas boss room, lvl 80 with 4 trials. I crash everytime I enter the boss room. The shroud says her line and then I walk to the arena and the game skips and then crashes.

I've tried Vulcan, I've got my graphics on the lowest already.

Hope you can fix this soon because a key part of the endgame is unplayable for me, and no doubt many others.