Well I lag whenever I get to a large battle so either that or just all the gunfires wizzing around. In any case I would like to remove the dead bodies, since I play soldat at school from time to time, and teachers dont like blood and gore.
I've successfully fooled them into thinking it's a paintball game by changing the weapon names and editing some pictures. But I'm sure it wouldn't be very long before they take more attention and look at the disenboweled body pieces on the ground.