The lag problem seems to be getting worst and it comes and go in waves which makes things super frustrating for healers. HOTs work but your burst heals like Breath of Life are not reliable. When the problem is happening you hit the button while standing on the person and your magicka goes down but their health bar does not go up. This cause healers to spam their burst heals and burn though there magicka as you think the heal never hit them.
One Run I did on 11/11/2020 the boss was down for about 10 seconds and no one was healing then the DPS's health magic pop up to full health.
As a result of this problem we have healers in our guild who will now only heal VET contact for full guild groups.
Live, Love, Laugh, Learn!