In notes section of Proxy Objects | VRayProxy Documentation. It still says:
- If you need to create several proxies linked to the same .vrmesh file, it’s better to make them instances. This will save memory since the .vrmesh file will be loaded only once.
As far as I know, starting with Vray 3.10, VrayProxy objects referencing same file resource are automatically instantiated.
Just an heads up.
Best Regards,