Ah yes, purgatory.
(Great game btw <3)
It was a combo of enemy timers and the fact that my level was in the hundred-somethings so the game was having a rough time as is (I was gaining so much EXP that I had to click through the upgrade list for like a solid minute every time I killed an enemy). I really love all the new additions, though, the curses and the class system add a lot!