So I have 2 level 50s, Bard as primary and BLM that I got to 50 but hated it and haven't touched it yet. I find healing fun so was playing Conjurer mainly because I like the no queues. Up until Thousand Maws I was doing really well, was actually doing tons of DPS (even though I know that will probably fade away as dungeons get harder). I found it pretty straightforward up until then, tank would seldom need heals, could let them get down to even like 75-80% and then Cure would bring them to 100%, and if multiple people were taking damage then Medica would take care of that.
When I did thousand maws the other night though I had to actually leave the duty at the second boss because I just couldn't keep the party alive. They were all people that had level 50 characters when I'd examine them, but the roles they were playing were just base classes like THM and LNC.
The problem I had though was the tank would take damage constantly compared to before, so was non stop curing him. At the second boss though it kept hitting everyone with poison and then slow. So suddenly the tank would be at like 70% health, I'd try to do Cure, which would take forever due to Slow, so as I'd be casting cure, the other 2 DPS would suddenly be down to like 80% health. I'd then try to do esuna on like the tank, and while doing that he'd get hit down to like 50% with the other 2 DPS close behind. I'd manage to get a Cure in and it would take him from like 50% to maybe 70% so seemed less effective, then he'd wipe and the rest would follow right after.
So I don't know if it was just a crap party or not but after 3 times they told me to leave or get voted out, but I honestly have no idea how else to do it. They would literally wipe less than a minute into the battle, their health would just plummet and tons of things like slow, poison etc. It's scared me away from healing since it's such a low level dungeon. I dunno if it was more my fault or just them, as their gear seemed low but makes me not want to attempt it again and screw up another party.