hello. I have played through chrono cross on pcsxbox so i know the game is fully playable. It will work fine with the default settings, but i think i turned off frame limit to make it run a little bit faster. The battles may still be a little slow sometimes.
I didn't find a way to swap discs in pcsxbox so at the end of disc1 i had to save to the memcard file.. FTP the memcard.mcd to my pc and complete the discswap in epsxe, save and transfer the memcard.mcd file back to the xbox.