I have a strange issue inside "dungeons" (caves,hideouts,towers,ruins, etc). Sometime my fps drops drastically into single digits when looking in a particular direction. I does not matter what's on screen (i could be staring at a blank wall), but anywhere inside that dungeon if i am looking in that specific direction, the fps drops to the floor, and jumps right back up when turning away from the "anomaly". I am running the game on ultra (shadows high), 4xAA, latest patch, latest drivers (11.11b, AMD obviously). This only happens indoors, outdoors, while the fps is lower, it never drops below 30, and in dungeons that don't have this issue the fps is rock solid 60. On a side note, this seems to happen most often when there is water inside the dungeon, but it isn't always the case. Bthardamz, Ustengrav and Ilinalta's Deep are good examples with this issue (Ilinalta's Deep is practically flooded so it's a great example). Outdoors, i could be staring at the biggest waterfall in Skyrim, and the fps is just fine. It's only indors. I'm stumped.