I did 10 raids and when it gets to mutts it tries to go to another room from time to time and would not attack the mother mutt. At Guardians it would gear up and seem like its going to attack but changes to range and tries to skip to next room. You just have to stop the bot constantly and hand do em (A LOT OF BABY SITTING). At shamans, it just goes and dies to the shaman without even trying to attack em or finish room. I'd say you really have to babysit the bot.