//deleted by the author
problem fixed by myself.
first off i updated my server creating an authorative one. then, i hard-coded a very light and stable respawn system for mobs and players themselves (including projectiles, chats and stats). also, floating RPCs are dealt only when needed, there’s no wasting of info.
not to be a programmer i studied a solution to instantiate private dungeons/maps, finally!
by the way, thank to everyone who read my previous post.
-arcady