Running the legendary lost sector over the weekend in Quagmire, I noticed the unstoppable perk does not always stun the mini boss ogres when clearly active. I scope with the hand cannon (round robin) hear the perk activate and see Unstoppable on the side. I hit the ogre and he flinches but is not stunned. Meanwhile I have already changed weapons to deal damage but find the ogre still coming towards me. Please address this inconsistency.