Just curious! It can be useful to tag one of the mini-bosses to help gather up some of the mobs they call to them (them FD the mini-boss, pull the mobs). Other than that, I'm not sure of any methods of getting through the zone a little faster. Tunare calls everything in the zone to her, correct? Is there any trash that can be skipped? Anything else notable?
I heard of you tell Prince Thirneg "I have come here for Phat Lewts" he will despawn all the trash for you
The funny thing about this post is....he thinks he is being funny. However that is exactly how to clear Growth in 90 minutes flat.
AOE the entire west side of the river in a couple pulls. Move to a central location, tag tunare. Bring big pulls. Tanks be quick about tabbing/picking up white-cons(pumas, lights, etc). Be aware of any of the significant named(Ali, Guardians, Rumble, etc). AE when there are not massive amounts of un-stunnable. Nothing super complicated, its all about pulling efficiently - meaning always having mobs in camp. Bring as much as you can possibly handle without significant casualties. You need to clear everything. If you miss a few, just kill them as you kill tunare since they will come to her anyway.
muffins dont fix all factions, like servants of tunare (Which are needed for all tunarean velious quests) and other stuff as well.
The one thing you neglected to post.. Was how long is it taking you to clear it now? Generally, the answer to clearing faster comes with more gear and better DPS. Pulling groups of mobs at a time, and AOEing them down.. But to better answer your question, knowing how long you are clearing it now is important.