On our fourth attempt, we got it.
The effect of the patch was significant. We did more dps, Archi had less health, we had more mana, even our fear wards came up sooner. Some things didn’t change though. Fires can still kill, and they did. People still could land in trees, or get separated. Last night 25 people finally got their game together and broke a bit of a dry streak for us.
Now we head back to Black Temple. Reliquary of Souls is our next target.