Ok i was playing in some server where is the map Estate only...Some message appeared on screen "Click n for better fps" or something like that..i clicked it and graphic was liek "cartoon"...Is that true that "cartoon" graphic lowers the lagg?..If its true please can someone tell me how can i replace this one with the old one graphic?

It basically disables all secular and bump maps as far as i can tell. Looks pretty crappy if you ask me.