Atheraal

Anyone have any ideas for this?

The U version, I'd assume. It's all in english.

I'm running Rez off an ISO with Daemon Tools, on Chankast. The game runs perfectly at first, I get in-game and run at an average 40-50 fps. Then, at seemingly a random time while I play, the sound starts to glitch. It sounds like it's still trying to play each individual sound, but only the first fraction of a second of it. It does this for the music as well. Normally, I wouldn't care, but that's half the game in Rez. I've tried it on Chankast.20a and.25, it does the same with both. Any ideas?