Seeing as the only person to give real help is the member of BW i will try to help you.
If you have a external harddrive try loading it onto there, then coppying it (With the patchs) to your computer, thats what i did and apart from a disconect today they game has been amazing so far.
Thank you. I managed to get it working when I turned off shading so it only lags up when I go into areas where a lot is going on like Nem'ro's Palace. But other than it works fine.