So pretty straight forward. I get 60 fps outside no problem, but when I go inside buildings and caves, my fps drops to about 30 or lower, especially in the dark. I don't have any mods for graphic overhauls or anything. Just some that add items to the game. I did get rid of them and try skyrim completely vanilla but it still does it. I don't understand why because the game worked fine before I uninstalled and reinstalled. I only did this because I wanted to get rid of skse and the mods that required it, I even deleted the entire skyrim folder from the steamapps folder before reinstalling so I know there isn't anything from skse there, I also started a brand new file since my old file wouldn't work without skse anymore.
I7 quadcore (not sure on exact model but I know it's Ivybridge) 12GB ram 2GB 680m Nvidia