Proc said:Worse one is when lightening flashes, my fps drops to about 15 or worse, every time theres a flash, real annoying. Other than that it runs pretty smooth.
Hey Proc I suffer the same problem, I've made a post on the GSC bug forum about it just in case you need to see if I get any sensible replies. Only reply so far is to get the 'no lightning' mod.
http://www.gsc-game.com/index.php?t=community&s=forums&s_game_type=xr&lang=en