I'm running on a windows vista home premium, intel core duo, 2.8GHz, 4gb of ram.
Everytime I start up the game every thing runs amazingly, it takes me about 10 seconds for load a new map, but it gets slower and slower the longer I play till after about 2 hours it will take up to 3 minutes to load anywhere, but once I quit the game and start it back up, it runs smoothly again, I have no idea how or why this is happening, but after 3 hours the game becomes unplayable to the point where I ant even walk around haven anymore. I'm running low graphics and playing the game through steam.