“Killing a Special or Elite enemy reduces damage taken by 10%. Stacks 4 times. Taking a hit removes one stack.”
This talent is already pretty solid, but tick damage can chew through all 4 stacks in an instant.
I think a 1 - 2 second delay/buffer between losing stacks could be a reasonable change.
(After losing a stack, you can’t lose another stack for another 1 - 2 seconds.)
EDIT: Even a 0.5 second buffer would be a great quality of life improvement to this talent.