I think ooo has a submod that allows you to change respawn rate of monsters. Default is 3 game days, I set mine to two weeks. You have over a year if you please but it takes more resources from your pc.  Shame this game does not has multicore support, role on skyrim
	
		
			
		
		
	
				
			 
	 
  
 
		 
 
		
 
 
		 
		