There are a lot of Virtual CD products out there. Some free some not. Have not used one in awhile nor could I say if that would improve performance of the game you are playing.

Might help to give some specs on your pc so we know what might be causing the bottleneck. My guess is probably has not much to do with needing the cd in the drive to play the game.

Others more in the know on this I am sure will pass on some help as well.