Thanks to Youtube user “strups” for providing this quick tutorial on Occlusion Culling in Unity. This small tip can really improve the performance of your game.
1. Make sure your camera has occlusion culling turned on
2. Mark all non moving objects as “static” in the inspector
3. Open up the occlusion culling window (from the window menu)
4. Bake with smallest occluder set to 3 and smallest hole set to 2 and backface treshold set to 100