I'm not sure if you were the player I handled in the advisor channel the other day or not, but I'll explain a couple things you can do to help mitigate lag.
Firstly, you can adjust the actual graphics quality of the game. This is all done in the PSlaunch program that comes with your download. Obviously, a lower setting is going to run the game faster. You can also turn down other graphical options: weather, grass, and particles are major FPS killers. You may also want to disable your loadercache. I'd also recommend turning off sound, shaders, and other special effects.
The other major area, which Aramara addressed, is fine-tuning your camera settings. Setting your camera to free movement, then maneuvering it so it's looking down at the head of your character really helps with loading less of the surrounding environment. Means a lot less lag for your client, in return.
If you're still having issues, just let us know.
