Hey, I got a similar problem.
I played the game for about 100 hours so far. Now suddenly it starts *lagging*. BUT only if I am in *The Western Approach* area.
And it does not matter if I run, turn around, loot, open the map, fight... anything even if I just stand there suddenly the game will be VERRY slow to react and it will take some time until it goes back to normal. Thing is, its every 30 seconds or so and it does not always last the same lenght.
I tried switching off everything and grafic to really bad, but still this happens. even If I just open the Menu.
I also got a NVidea. And as I said it only happens in the western approach...
Anny suggenstions? I can´t play it with that much lag. (would like to post a video, but dunno how to make one while playing... )
Thx in advance