ofcourse polygons have to with Graphics. Only a certain amount of polygon is allowed per map. thats why you see some round shapes that are octagons instead, because the polygons are precious and are only used on center show pieces. just check out the picture below, notice how the mouth piece on the right are more round compared to the polygon deprived mouth piece on the left. Also in KZ3, look are structures out of map and some circles are very poor and are more octagons than circles, compared to the in map circles which are rounder
