Pokemon Sapphire glitched sound

[Selmalaks]

I'm not sure if this is a OpenEmu issue or a game specific glitch, but I tought it might be worth posting in case someone has any tips on how to fix this issue. So I was playing Pokemon Sapphire when the sound suddenly started glitching while I was in the middle of a battle. It's like a loud banging sound that constantly repeats in the background over the normal sound, I think it might be a sound from the battle that glitched and is now on repeat. I tried restarting my Mac as well as updating it, but that didn't seem to do anything. I have also tried to search online for a solution, but so far I haven't found anything. Does anybody have any tips on how to solve this problem?