@TheHomieData

It really depends in how the scourges are positioned. Sure, multi dotting in general is a nice way to increase dps, but you also have to consider any possible down time while switching targets as well as auto attacks that won't go off.

Furthermore, the scourges themselves aren't really annoying and don't take too long to kill, but killing them one at a time faster than as a group means less liquid hells, which can get annoying.

Ultimately, it doesn't really make much of a difference you'll find.