i mean i've seen multiple people now say that undercity takes a minute or less. The first guy i chalked up to as just exagerating, but now i'm considering that maybe i'm clearing it incorrectly. No matter how i optimized it when I ran these, 2 minutes would be my average, and i dont think i even got close to a one minute finish. I would play arbiter pally and clear everything just by dashing around and still couldn't hit that time.
Checking the internet.. 2-5mins seems to be average. Sub 2 if you have a fast 4x man group (or a friend or two that can split effectively)
I get about 3x min runs on a slow bloodwave Necro

I’m going to start testing other Necro builds to see how fast I can get
Sure seems like 2min runs solo is a great job