BF2S Forums Punk Buster or high ping problems read this!

pb_sleep 500 (this will make punkbuster do its thing every 500 seconds instead of every 20 seconds which creats most of the lag)

Then type in..
pb_writecfg (this will save it to you BF2 files so you dont have to type it in the game again)

type that in and bam you got your self a less laggy game hope it helps