You don't need voice chat for vent, if you're dead at i57 it's due to not dodging, not lack of coordination, also that's a min i57 not everyone quing in is going to be i57. Personally I would never duty finder Titan HM anyways, PF it, set your own ilevel limit and if it's a serious clear run, not a training run, enforce competence and replace incompetence. That advice aside it has ben cleared in i57 groups