How to Use Occlusion Culling in Unity — The Sneaky Way

For those who never went through an occlusion culling tutorial in Unity can you guess what's wrong in this game's indoors scene?

What is and how to apply Occlusion Culling in Unity

Avoid merge conflicts by using a multi-scene workflow in Unity!

Unity - Manual: Occlusion Culling

Unity - Occlusion Culling (Pro only)

Performance going downhill with latest versions of Unity, Post Processing and SRP - Unity Forum

Use Occlusion Culling like a PRO unity advanced tutorial

How to Use Occlusion Culling in Unity — The Sneaky Way

How to Use Occlusion Culling in Unity — The Sneaky Way

Unity - Manual: Occlusion Culling