Bad behavior from hyperius

Hey everyone, I was farming hyperius, and suddenly the B0re action just stopped. The bots wouldn’t group up, and the ones that did died before hyperius would. I had killed him 6-7 times before this. What am I doing wrong

Not grouping them correctly this time around?
Best way to know they’re grouped up is by having their shields overlap each other.
You do know that B0re’ing Hyperious isn’t a 100% thing all of the times…sometimes the bots get B0red before Hyperious, some times he moves around too much to enable B0re. You’re not doing something wrong necessarily, it’s just something that happens.