New player here. Just tonight I finally hit a wall going through Heavensward after reaching a main scenario quest that requires level 58 - I'm level 57. I've been tracking my progress and noting what's to come with a MSQ list on a fansite, and after getting locked out of the MSQ until 58 I decided it'd probably be a good idea to just get to level 60 so I can ride the main scenario all the way to Stormblood from where I'm at now.

I'm maining Samurai right now, with no class/job higher level than SAM currently, so I don't have the armory bonus - I figured either way, Palace of the Dead would be a fast and easy way to boost up to 60 from 57, because I remembered the last time I did POTD (which was in the late 40s) I was getting ~30-50% of a level per completion. I've done two tonight, and it's been incredibly disappointing and aggravating to only see myself get around ~10% of a level, because that means I'll have to do 15+ runs of floors 51-60 to get to level 60.

Is there any sort of alternative to Palace of the Dead that can get me to 60 from 57/58 quicker? I don't know that I can handle trying to chain run 15+ POTD runs with random groups just so I can get two/three levels.