Is there a way to store parts in a low-memory state?

I’m making a procedural generation system using 4x4x4 voxels, and I need a way to load and unload these parts really quickly. Instead of instantiating and deleting parts when the player moves, is there a more efficient way of loading/unloading parts?

I would probably say that moving something from workspace to serverstorage and back is more memory efficient, since it only needs to physicly start showing the terrain, not load it from scratch.