Act X - Betrayal Event - Aisling and Necromancers or herself raising a Horde of uncountable zombies

Bug Report ID: #3160954826

Aisling from Betrayal spawned some 25 or so necromancers who rose at incredible speed, zombies or ghouls causing anyone to help me freeze and disconnect as getting close to Aisling—Act X - The Desecrated Chambers. The betrayal transportation cart did not move either during the event. Necromancers seemed to have been raising non-stop 5 ghouls per necromancer, each covering the entire screen. My computer is top-notch notch and while it never disconnected, it always slowed almost to a freezing point, definitely lagging.