Coliseum - DRYAX T7 can't be finished - HP Frozen

*Hat on*

Is Colisseum tier 7 significantly more difficult than it was about a day before? Because I took in my usual team of the ISB trio against Zeffo Guardians and couldn't get half of my top score, 4% down from 10%. I chalked this up to really bad RNG. Twice in a row. Oh well, no biggie.

Enter Dryax who, turn 1, almost one shots death trooper with the slam attack, then the other one demolishes Death Trooper, Krennic and Partagaz at full health/prot (aside from death who was already going to die anyway) with another slam, and then 1 shots a full health/prot KX Droid with its basic. I got 1% and two turns in.

*Hat off*

I know the silly trap of making assumptions about how something "feels" without actual data to back it up, so I could be completely wrong and likely could be, but I swear it was not this hard before? Stealth Changes are usually a cheap forum whiners excuse for their skill issue or rage against RNG, but I'm over here scratching my head wondering what the hell is going on. If somebody more knowledgable could shine a light, I'd at least have some peace of mind.