Changing the shadow setting during night bugs the graphics out completely to the point the whole screen goes white.
As I noticed much heavier lag in this build during night and in closer proximity to light sources I wanted to check if it had anything to do with the updated shadows, and as im on a rather old videocard atm (Nvidia GTS250) I wanted to see if turning shadows off would enhance the performance. It didn't. Still lag and a white screen with light blue streaks where light hits (I think).
Previous build I have rather good FPS day as night except near lots of trees.