Do you think this have with the game to do or the sound settings? (I'm new on this with PS emulator)
It could be game related, I'm not really sure because I didn't play Harry Potter.
I don't have any sound issues when playing games, so you could try to set up your sound config like me:
My sound plugin is Andy's SPU Audio Driver 0.141
Below that you have 4 boxes, check top 3 and leave the 4th unchecked.
Then go to Andy's SPU configure:
Buffer:
Sound buffer size 8
XA buffer size 48
Misc: (check this boxeds)
High resolution mode
Enable SPU IRQ
Volume:
XA volume 75
Reverb volume 50
Well, that was probably pretty useless info, but I hope it helps you anyway!:laugh: