I used the cheese strat and was able to down it on mythic 0 within 5mins... Can't imagine doing this successfully with MYTHIC+ when it's Tyrannical week.
Holy priest spamming aoe heals / renews / hymn in between spirit beast heals / exhilaration... made keeping the group up pretty easy but still a ton of damage.

I was playing from the healer perspective and moving the healer out of the pack to dispell the knockback and moved back in... didn't dispell anything else.