Recurring crash to desktop in Temple of Kopec boss fight

Reloading the game puts me back into the fight but crashes again after a few seconds.

Edit: I finished the fight after about 4 crashes. Seemed to not crash if I didn't use grenade skills.

Same here... crashing all time when he is around 25% life. Spark Build.

I also had this issue on my pathfinder, replied in another thread with information but just to hopefully save debugging time I'll post it here too

In my case, it happened, without fail, every time he does his scorching ray mechanic during or after the fireball bullet hell mechanic.

I just ended up teaming up with a friend to burst him dead before he could do the bullet hell in order to unblock my progression, but other than that there didn't seem to be a solution. Client restarts, biome instance restarts and GeForce Now VM restarts did not resolve the issue, scorching ray = crash without fail.