Your theory has helped me solve the issues i was having (game freezing for 5 secs every minute - ages to save/quicksave) - I had got up to level 39 with 70 or so saves. I looked at the save games folder (which obviously I should have done sooner) - save 1 was 3MB, save 70 was 8MB however save 71 was 42MB, 72 was 54MB, save 73 was 150MB etc. - last Autosave was 210MB I had gone back a few save games to try and fix the problem - but not back far enough. Going back to the 8MB save seems to have cleared all issues. Now I had been adding and removing various mods/ENB (as I have from the start) - clearly something went awry - not within my limited expertise to say more Anyway - thanks