Discussion Cost of Unity Render

Hi there
Recently, I am play with unity game optimizing. And most of optimizing skills are related with Unity Perfabs. And I am wondering will It cost less If I made some Perfabs change during the program. For example, I am putting cans into a box. Everytime the box is full, I just active an Perfab that ignored invisiable part of the cans and deactive the orignial box. When I need operate the cans I just reverse the previous steps. Will it worth to try ?
Thanks

 

That will probably help, especially if there are many boxes. Rendering less is generally better.

But for all performance issues, run the profiler!