Best way to Optimize Multiple Physics Objects?

Hi All,

I have a project where a room fills with plastic bottles. I need the bottles to generate and fall from a height, so physics and gravity are a necessity. I’ve tested this in a scene with multiple spawn areas, and it works fine but all the bottles kill the FPS making this method un-usable. The mesh itself is fairly low poly, and I have LOD’s set to make it even smaller more efficient.

I need the FPS high for VR, so Is there a way to get this to work without killing the CPU? As I understand it Instance Static Meshes are unable to be used with physics, so Is there a better method?

Thanks