Question about Asylum's Random Spawns Options

[Jon Irenicus]

Ok, i have reached the asylum and am now in the zone where the book that spwans monsters when you click on it, where the crystal and the vampire with the hand to open the door are . In this zone, in every few rounds there's a asylum golem , or 2 whispering spiders, or 2 skeleton lords spawning every few rounds.Normally i would be like: yeah whatever....but while i am fighting the group of undead composed by a shade lich , 2 skeletons grandlords and 3 skeleton lords near the library, the others guys keeps spawning and interfering with the fight vs the undead.What i wanted to know is if theres a way to stop this spwans by killing X monster or something, or will they only stop once the area is fully cleared? Facing about 5-7 skele lords + 2 grandlords + shade lich is a bit... -.-