Just found this out while running my weekly bwl, hopefully someone can think of a use for it.
At the start of the fight with nef I went afk in my usual corner and began reading an article on my phone, figuring I'd just aoe everything down after awhile and continue.
So waited about 5m and aoe'd everything down smoothly. Then, when nef got to 20% and respawned everything the server lagged to all hell, took 10 minutes just to attempt to kill the spawns after he was dead.
tldr;
1. Clear to nef in bwl
2. Start phase 1 and go afk
3. Kill the never ending adds after some time.
4. Get nef to 20%.
5. Enjoy server lag?