What do you mean? Is it an image you're running off from the hard drive using something like Virtual Daemon? or are you just saying that there is no speed difference between a copied game compared to the original? If its just a properly copied game it should perform the same as the original, but an image (ISO) is different, much faster and more convienent (if you have the storage space that is) 'cause there is no mounting time (spin up time) and you in general would get faster performance. Try to clarify what you mean.
I like to have the game 100% on disk plus i have a other problem, with bin and cue file of my south park, there is no music, but when i play of the CD (burnt) there is music. My computer can't not enable digital audio so no music when i play off HDD. i wonder if anyone can fix that for me, or tell me how, or tell me if i should by a new sound card, i'm using 16 bit.