I wonder if they use the name "Lingering Static" for two different DoT effects? Starting to wonder that from the comments here.
I have no problems out-healing the damage over time when Molag Kena is in the middle and sending out waves of static. The only problem there is if the static blasts all the way through my shield and knocks me out, since I can't heal when dead .
The problem my groups tend to have is with the Lingering Static from the rotating lightning walls, since some of us are a bit rubbish at standing in the right place to survive them.
I've tried to purge Lingering Static from the lightning walls before, but I don't believe I've ever managed to remove the DoT - whether with my Sorcerer Healer running Efficient Purge or with my Templar Healer running Cleansing Ritual. Every time I die during the lightning wall phase, I see Lingering Static on my "death list". So I'm rather mystified about how people say it's purgable. Unless I've managed to purge it from others but not myself?