T1 is relatively difficult with even a modestly good group. Some of the NMs are just huge time sinks that you can't realistically do the NM and then the Cairn NM on the next floor in just 15minutes. The Urganite goes inside his shell and even when nuked hard, stays in there for a good while, the Corse spams charm and just takes damn long to kill with having to keep sleeping people. Tried a bunch of T1's with WHM RDM BRD MNK SAM DRG and we would beat the Mistmaw NM but unrealistic to beat the subsequent boss in only 2-3 minutes. It takes a min or two to buff at start, then another 3-4min looking for the correct Noetic to pop the boss, then killing adds/rebuffing, boss has time-sinky properties like Charm and hiding in the shell, 15min just isn't enough to tackle the the first and secondary boss(not even counting the other NMs spread out in the zone that increase drops like Heartwings or Krabatoa's).