I don't know if you have noticed (which is obvious), but please avoid playing as Melee/Healer roles on The Feast, due to server ticks, you will often be interrupted while attacking and healing properly. Leading to loss of DPS and delayed healing.
Often resulting in a free Defeat for everyone else in the team, since you can't do your job properly because of system issues.
Try doing like me, play as BRD/MCH. Your only enemy is the wall.