Well I've been playing this game for a long (!) time but never encountered this. I have no idea what causes it. I was playing the game perfectly. The only thing that was changed was a driver update, maybe that is the problem... dunno. I've uninstalled the game, so it has no mod on currently. I have a video of the fog glich but couldn't catch the lighting glich. That was probably the lights coming from the flames. Torchs, dragons. I have no idea how to explain that. It flickers like the fog in the video. AMD Radeon HD 5670 (AMD Catalyst Omega Software 14.12) Win7 Intel Core 2 Quad 4GB-RAM http://youtu.be/pOB9EfwVvkQ