It seems that when I get close to a tree that has a light source near it, the light source will 'suddenly' start casting upon it. Here is an example, notice the tree near upper right:
- http://i.imgur.com/RKp9M.jpg?1
Then after moving camera in one 'click/scroll'
- http://i.imgur.com/Gplrx.jpg?1
I have gone thru most every ENB and Skyrim ini option I could think of. None seems to help with this. Same thing happens when I disable ENB too.
EDIT: Fixed by increasing Tree Distance with Skyrim Configurator to a larger amount (2.5 times what it was)