Occlusion Culling doesnt work.... Help! (749365)

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.

Same issue here