One-shotting a large amount of mobs on a boss map will produce a large amount of lag.
Mainly happens at Zakum, Chaos Zakum, and Empress Scrubby Garden. Probably doesn't happen that much at HT.
I also tried killing the Scrubby Garden mobs one at a time and dc'd from that yesterday and today. And too many there will dc you upon entry so avoiding them isn't a good solution.
Does anyone have any good ways around this?