Been getting lots of lag myself and booted of as well tonight only to get the wold is full message multiple times.
Was in fates and kept using attack actions and nothing seemed to be working, maybe a minute later boom, i was dead.
It had first started when doing Expert Roulette in tam tara, a fc member used lb on last boos, i still seen the adds up and was attacking, moments later i seen i was last one in dungeon, lol

And i seen other people dc in front of me as well while running around. This was on Leviathan server