you can add mor than 7 lights, but you will have a very low framerate. i need to write a system with searches for the nearest lights and will "activate" them, to get rid of low FPS.
and yes, actually it renders the shadows every frame. i have a system working which only renders them if something moves, but for now it doesn`t render if i walk through a door. but i think i will find a fix for that and that will definetly get more FPS.
With activated "searching" i get around 90FPS, but if you pick up an object it drops to 40-50.
... efxMod Developer!