Kongou good luck trying to troubleshoot this, too many other people are having similar problems for it to be on your end. Check out this post for more background. Also there’s a huge thread in T/S forum relating to Oceanic, very similar problems. One other reference point you might share is whether these problems started with the 8.1 patch, as many of the reported issues do, including mine. Ability/Loot Lag on North American Servers Despite Normal Latency - #21 by Drakuloth