Export from Blender to Unity locations as a single blend file or is it better to split it into separate fbx objects?

Question

Unity

Good evening everyone!
I'm working on a location in Blender to play on Unity. The question arose: what is less costly in terms of resources - to make the entire location in Blender, with all the details, textures, interior items, and so on, and export it as a single blend. file. Or save all the items separately in the fbx format, save the location itself without filling in the blend format and fill it with content already in the engine?
I would be grateful for the answer, I hope it fits the topic.

Answer 1

Exceptionally separate. If necessary, you can use one fbx, but the objects must be independent meshes.
The idea is that in terms of performance, Unity treats individual objects with more love and awe. The engine does not need to keep the entire level model in memory, which means it does not have to eat the resources of the target computer. Plus, with independent objects, it will be easier to edit the location directly in the engine, this will allow you to use the repeatability of objects so that each conditional "mug" or "barrel" on the map is not independent meshes, but simply duplicates of the same thing. This will also significantly reduce resource consumption. Well, no one canceled the baking of the environment.