So last night I was running TPD, and I don't know if it was intentional or not, but everyone slowly started leaving as they'd keep dying, I feel it may have been accidental cause they thought they could return to gateship. But then after it from 9, to 8, to 6, to 4, I realized people were just flat out leaving the run and we were halfway through Sodam already. It ended up being me and just one other person and with 38 minutes left to spare.
Please don't abandon your runs. It is very unsportsmanlike and completely drags down the rest of the MPA if people start leaving. It was extremely aggravating because our progress wasn't bad either for the amount of time we had before people started leaving. (I believe 45 to 47 minutes remaining?) Needless to say, it completely just ate away at booster time and left a bad taste in my mouth after that happened.
tl;dr: Don't abandon UQ runs, it's a negative domino effect in cases like this.