There's ways to counter that, especially on mainland... pressing ctrl-p and going to the graphics tab, and turning down your "draw distance" will reduce the amount of terrain and objects around you that you have to download. Unlike a professionally created and managed game, on about 90% of the regions that you'll teleport to, people paid absolutely no mind to how laggy they were making their land. You'll probably find your fps changing drastically from sim to sim/region to region. That's normal, and if the lag is really bad despite a low draw distance and almost no people, get out of there
