I don't have video to prove it, but early last night my pickup group downed him in under 8 minutes (closer to 6 I think). The fight is quite easy if everyone knows what to do and does it. Weapons of light helps a bunch too. Had a few fails that were really annoying. Made me have flash backs to the gate bug in vog. We killed sword guy and the sword glitched and disappeared, we fought on and had one attack to kill him at the end but he enraged and we wiped. Lol. Super frustrating at the time.