[Chieff]

as i experienced on my ancient pc,,i had 256 mb rams,some low graphic-if i set graphic on high quality,loading went to 20 minutes-when on low,it takes 4-5 -so it depends how fast computer configuration you have

other thing...speed may depends on your HDD and particion-where did u put game,i think also disk defragment can help here(im not sure,but i use it anyway)