IS IT POSSIBLE TO INCREASE SIZE OF DUMMY FILE FOR DISCJUGGLER??!?!?!

Hi, I am wondering if it is possible to increase the size of the dummy file on the CDI(DiscJuggler) games. If you know how, then plz tell me. If its not possible then plz tell me. Thank you. Only reason I ask is becuase some of my games have slow loading and a bit of slow down, and I find out disc has about 50MB's free.