Originally Posted by
ryklin
I don't know about OP's example where the stacks stay up, but I have noticed in 20+ M+'s where people are hit hard from full regularly, machinations is wasted because it procs before the large hit is received. In raids where people are often dying because they weren't topped off and this may stop death from a large hit, this is great for raids since people seem to never be topped off, but in M+, this makes it often a complete waste. It may have something to do with the damage sourcing being tagged as from a guardian or something other than a direct enemy would be my guesses for these examples.