I find this patch and i think is usefull... is made for Interlude, i used in c4 too. With this patch you can see throw walls and delete trees to make posible box many clients (removes lag from gaphics), or just to see enemys comming. Just unzip and replace your Option.ini and user.ini
It works whit 3 buttons, that enables or disables actors(pjs and npcs) and static(walls, trees, etc):
Page UP (static)
Page Down (actors)
Mouse Trundle (static and actors)
more info: http://dhost.info/thugl1fe/pretorion/Antilag.htm
download link : http://dhost.info/thugl1fe/files/Antilag%20pach%20by%20pretorion.zip (not working with IE, dowload it from the other link above)
mirror http://rapidshare.com/files/124379911/Antilag_pach_by_pretorion.zip.html
Credits to pretorion