The Spirit Realm

Im really getting tired of this quest. Im at the collect part and the Springy Young Branches are just so damn rare im thinking of giving up all togheter. I heard 8x of them are needed anyone got any good ideas how to farm them faster? Im getting like 1 for each 30 mins of clearing or so.. And im doing the quest for 4x chars..

I think you must be pulling & killing too many mobs. Only kill trees, and get a partner to chat with who will dps for you. Clearing just the trees, but all the trees just barely in time for repop, I collected one set in an hour, and another set in two hours.