Audio crackling with Vsync

[Vibhor]

I've been playing through Chains of Olympus using PPSSPP but one thing I noticed is that there is a lot of screen tearing when running it full screen.
To deal with it I tried the Vsync option and while it works wonders against the screen tearing, it causes the audio to crackle/pop. With vsync enabled the game speed hovers around 96% instead of the 100% without it despite running at around 300% in the same screen at 3x resolution with the frame limiter disabled.

Is there anything I can do to remove this crackling?