Don’t beat me if I am not supposed to post it here, I am new to the forum.
OCP 3.0 “One Click Proxy” - Blender Market
Effectively you can one-click loop through the view-layer and add a proxy instance to all objects or individually. You can create a custom low-poly and use that instead too and you can toggle on/off all proxies.
You can delete all proxies in one click as well and do test renders where the proxy instance does not show up in the render and you can add your material back on the addon UI
Further, you can add Python commands for shortcuts into the addon, and store the location, rotation, and scale of any object or all objects in the scene.
There is an Icon gallery for selecting either meshes, lights, cameras, or all objects and setting them as “active object”.
you will have global ratios for scale of all instances at once, no crashing or individual as well.
there is a similar functionality with a batch decimate feature for the option