Will building interiors slow rendering?

Simple question. Will having a lot of objects that aren’t visible slow rendering? If I have a building, should I put furniture and objects in it at edit time, or will the large number of objects slow rendering? I can load the objects when you get into the building (triggered by collider at the door), but is it worth doing that?

With a good Occlusion culling you can save performance, but regardless, having lots of objects in a scene will come with a price.
If most of them static and have simpler colliders, you’ll probably won’t suffer from performance issues, but since I don’t know what you have and what you think to do, I cannot say for sure.

I have many rooms that are filled with many, many objects and nearly half of them are dynamic, but occlusion culling saves me nearly 70% less draw calls.