I have to admit, most of the players In Mateus, US server have complained to me about this issue today. Also I experienced firsthand when I attempted to tank my First Roulette. This is being currently addressed on EU servers, but it needs to be fixed on US as well. From what I gather it seems to be a game-wide problem since 2.2 patch, but more specifically since they did the Emergency Maintenance last night. Lag is just unbearable to do any dungeons.