I have serious lag problem on Klaipeda server after maintenance too.
It happens mostly in instance dungeon but normal maps get lag also.
Ping is from 5 to 22 that happens at least several times a minute and lag time is literally more than game time.
Questing is still manageable but dungeon is basically unplayable.
(I thought there’s nothing change on Klaipeda server in terms on network set up, why is there such a dramatic change on network issue?)