Lag from internet latency. This is the one that I think will be around for a while. We have experience coders who code very efficient network engines. But again, there are two factors. We still can't push a ton of data out to the player, and we'll still have situations where the player can't get a good connection to us. We'll do everything we can to minimize this, but I want to be straight up and say that the Internet still isn't where it should be, though things have gotten a lot better.
Lag as framerate. The answer here is, like I mentioned, lots of options that a player can turn off if he happens to be in a raid or near a ton of other people. That and hopefully a smart system that will adjust things in real time for you. This is important to us because we are pushing technology with this game. I'm glad we are, but it does mean we will be more subject to frame rate issues than, say, WoW. It also means that our min specs will be higher. It also means we need to have lots of options and also do a lot of optimization, both of which are in progress.
Source: Aradune Mithara