Outside lighting is nowhere near matching the skybox, it throws it off completely, the problem texture looks like its normal map is off. Did you make it or is it stock?
If its stock, try reloading the map and seeing if that gets rid of it. I had a problem like that when I got my new GFX card on my old PC, I had black lines every 512 units on all displacements, I reloaded the map and it was fine. Went away after that.
|