Kingdom Hearts 1.5 HD Remix [BLUS31212]

Could you also provide information to me about how you dumped the files, and just out of curiosity, what kind of processor you have?

I tried with the Boot Game method selecting the folder and also with the SELF / ELF Boot method.

My processor is i5 7400.

that doesnt tell me much about how you dumped the game.
Someone has recently suggested that setting SPU threads to 2 may fix audio issues, though you may run into graphical problem later by changing this setting.