Ive also experienced this. I see the curse coming, i am in no way doing any damage to anything, no razor..nothing. My ping is always fine, less than a second consistently.

Somehow, even after i proc Nil aa, i instantly die. Maybe the curse skill isnt lined up correctly with the icon notification we get from the mages idk.. It does seem like it just started happening. This wasn't happening a month or 2 ago.

Seems the difficulty has also been ramped up, maybe curse skill got screwy there(just an assumption).