PhysSound Open Source

Here's the license
Here's the download from the author

Optimization

Optimization up ~30 fps in heavy scene. Changed only PhysSoundObject.cs script.

PhysSound without optimization https://youtu.be/ESEi2VGAPBQ

PhysSound with optimization https://youtu.be/EWA-PtrIAkQ

PhysSound optimization NotInSoundZone https://youtu.be/aN22MnHVCW8