From the
FAQ
My sound is terrible. What can I do?
Sound quality cannot be guaranteed if the emulation speed is not at full speed (99% or 100% on the title bar). If you own a SBLive card, make sure you have updated drivers as they are really buggy. Also, if the emulator is not running at 99% or 100%, sound may not be perfect. Also, you may want to experiment with different settings like frame skip, vsync, synchronize, sound quality and priority to find the settings that work best on your computer.
Why some games have no sound? (message about BIOS function)
Some games use the BIOS sound driver instead of placing it on their cartridge. VisualBoyAdvance does not emulate those BIOS functions, so no sound will be produced in those cases.
I would conclude that since you're suffering from stutters, and not lack of sound, your problem is not BIOS. You need to play with your settings some more
Jam it back in, in the dark.
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