Same thing happened to me when I had to do it to unlock ampador keep, After 4-5 groups I finaaally made it through. As a healer I just spammed medica in the end hoping no one would die.
So yeah, I don't think they should release new content until they fix their current issues. The Aurum Vale was laggy before I even hit my first level 50, and it still is.
Are they even trying to fix it?