I've turned off the 'showgrass' option as recommended but I've heard that turning off chat can decrease lag too. Anybody else done this?
Well according to this it will but I'm kind of reluctant to turn chat off in an MMO. It's part of the game for me. Try some other good hints and tips on how to increase speed. http://everquest.allakhazam.com/wiki/Frequently_Asked_Questions_(EQ)