Not sure what you mean, but when realms get really full, or at least when zones are packed full of people doing FATE's, realm latency is still terrible. Couple that with the fact that the majority of figh mechanics revolve around moving out of AoE in time, it makes for an aggravating experience.did they fix the aoe server lag thingy
This isn't as much of an issue incontent you access through the Duty Finder because it takes place on their own server, but it can be an issue sometimes.
Regardless, the game is definitely worth a look at. Leveling is pretty engaging on your first character due to the main scenario quests, and if you enjoy running dungeons for fun rather than difficulty it's great, but what nocturnus says is true, the difficulty is lower than what most hardcore/ experienced raiders are used to.