I seem to start out OK but after a half hour the FPS starts to degrade down to individual frames with 2-3 second skips. I'm all kitted up with ammo and stuff in containers in my pack on the west coast. I have a camo painted Mosin, ammo box full.
Core i7 quad OC to 4.5 MGz, ASUS MB, 32 Corsair Vengeance DDR3 mem, 2 7950 ATI GPU with 6 GDDR5 in Crossfire with latest drivers.