LowLatencyAudio performance problem

[MerrickZ]

I'm using LowLatencyAudio plugin in my 2048 game to make some noises,but I can clearly feel the lag when audio enabled.
so I did some performance profile,and the result shows below:

It seems LowLatencyAudio plugin takes 17% CPU while others take only 0.81% at most. This shouldn't happen.
It's native c++,right?

need some improvements.

Thanks,
Merrick.