Any benefits of cloning Corona proxies as instances?

Hi! When cloning regular objects in Max, there are benefits of creating instances rather than normal copies, concerning file size, scene load/save times etc. But what about Corona proxies, are there any performance benefits of cloning these as instances? Normal copies of Corona proxies will still reference just one .cgeo-file, so perhaps they are just as efficient as instances in this case?

I always instance proxies if they are the same P geometry and material.
If they are different materials but same proxy I copy.

Cheers,

proxies are instances, really the only difference between an in scene instance and a proxy is how they are represented in your viewport. The benefits of using proxies versus instances is just to save viewport performance, there isn’t any difference while rendering.