I've definetly have to try this when i get on my computer(on my bros at the moment). It looks like i qualify for all of the tweaks, and about the PCI latency tweak exactly how safe is that tweak, cus i dont feel like messing up my pc again.
mmk...i did those first 2 tweaks but i only get 2-3 fps increase in outside. well, better than nothing but w/ all the grass, no tweak will matter that much.