From the Launchpad.
Hit the game options button.
On the Advanced Tab, Disable World Preloading and File Caching.
This is te recommended settings from Thunderheart's Post
LAG
I think they may have already done some tinkering with it today because I was already noticing better lag... er, performance, today. Got to log on earlier without lag.
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- The Kika'Vati Order
1. that's always smart to turn off your firewalls...Mirkwoods wrote:
This is strange... but;
After that, I decided that enough was enough, and I then decided to try a bit of experimenting. Well, I shut off windows firewall first. Then I went into the pre-launch game options under graphics and turned on "use low detail normal maps." I already had the buttons; "Disable bump mapping," "Use low detail textures," and "disable multi-pass rendering."

2. That's always nice to turn off all the pretty stuff so the game can look crappy, but hey, it's playable
hope they fix it for ya
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- Grand Moff