How come my ripped Quantum Redshift takes AGES to load?

[theoriginalmre]

I can rip it and load it from my hard drive, and it's fine. But when I rip it and burn it onto a dvd, it takes ages to load from there.

None of the other games I've ripped and burned the same way take this long to load.

Any advice on how to sort this problem out? I'm using the usual FXP ripping and Stomp burning method. I have the Enigmah mod chip.