Keeping track of every single arrow ever fired laying in the middle of nowhere, every single item, every corpse and weapon dropped on the ground, the permanent ash piles, goo piles, etc and etc. Seriously, this is just ridiculous and plain lazy programming. I am even more surprised because this issue affects the consoles (which skyrim was made for) first. Very disappointing that Bethesda keeps working on new content rather than fix serious game breaking bugs.