Can't you set the audio buffer size in windows? Probably in DXDiag.exe too?
BTW when you have two maximized sounds and play them alltogether, it may be distorted too, since it's overdriven. You need to set the volume of both to 50% to fix it.
BTW when you have two maximized sounds and play them alltogether, it may be distorted too, since it's overdriven. You need to set the volume of both to 50% to fix it.