Dawned on me a few min ago when I did a Grandpa run.
Leafre set = Passive: +30% PDR Ignore
Dark Binding = Passive: +30% PDR Ignore (+31% with Decent CO)
Demon Impact = Active: +50% PDR Ignore (+51% with Decent CO)
Demon Cry = Active: -15% Enemy PDR (-15% with Decent CO)
Without Cry, I should have 112% PDR Ignore whenever I use Demon Impact, assuming Decent CO is active, but whenever I use Demon Cry on a target, my Demon Impact damage suddenly shoots up by 40-60k+ per hit.
Do these PDR Ignores not stack together? Or is it Demon Impact that doesn't stack additively when used?