Grandia 2 PAL Issue

I recently patched a Grandia 2 PAL ISO with the Pal to NTSC converter, and for some reason, the audio during cutscenes seems to either skip or go faster than the video playing. I'm currently in a bind as to what I can do to fix the issue at hand.

Any help would be greatly appreciated.

Edit: I'm using OPL 0.9.3 to play the game.