[Bozos of Bones]

Well personally I have no trouble with that fight, especially if using haste at the start of the level. She falls in a timely fashion once you focus on her and ignore any summons or other enemies that exist.
And the tightening and loosening of the chains were the workings of the laboratory when D'hey Jazzerion comes in. You're past that now, no need to worry about it.
And the Finger of Death works wonders againt some bosses(Beastmaster, Izabelah etc..) but will crash the game on others, atleast in my version. The Guardian Dragon and Sherincal both crashed my game when failing a Fortitude save against either FoD or Destruction.