Emulator

What's the problem?
Sound in Muramasa : Demon blade cracks up after a while, randomly, mostly when a lot of ninjas are onscreen, if you keep playing the sound keeps getting worse eventually crashing the emulator, the rate at which happens is random, sometimes in the intro and other times in bosses/trunk enemies/a lot of enemies/different sections through the game, it always happens though.

Dolphin version with the problem (as it appears in the title bar, Ex.: "R
4779" or "R 6403M"):

Operating system and version:
Only tested with 32-bit

Game ID (as it appears in game properties, Ex.: "GZ2P01" or "RSBE01"):
RSFE7U - MURAMASA

Was the ISO a plain dump from disc, compressed and/or scrubbed?
A plain dump from the disc, also tried with the compressed version and the problem is present on both.

Please provide any additional information below.
Happened less frequent with older versions of the emu, like SVN R 6378 but it still happened.