2 useful tip here people might have mention

I believe the skill Garuda use will only hit healers (slip stream or friction, i forgot which), so having your healer stand away from dps helps a lot) - especially with the omfg tornado lag i can't see crap

Keep spinny plume around 60%, no more, no less. This allows enough mess up by some players, but this also allows enough time to kill it even when 1 people might be nervous and forgot to hit it when garuda left