Occlusion Culling doesnt work.... Help!!!

Hello! So, I’m trying to turn on the occlusion culling but I have one problem. My occlusion culling works only when the occlusion culling tab is open… The second after I switch tabs to… for example inspector, occlusion culling gets turned off and my fps gets worse (from 300 to like 40)… Please help .-. thanks.

I also have this problem…

I’m not sure but I think if your object visible in editor scene tab camera then it won’t be occluded too.