Oclusion culling not working

Hi, I’m building a game but when I freeze rendering behind an object all objects that should be occlusion culled are not, they all have the culling enabled but they are not culling, and I have introduced a distance volume too but those objects just do not disappear (the map is composed of separate static meshes, all planes, so I feel like they should disappear)

there are some elements that do pop out though

Hi, are the meshes using nanite? Cause nanite ignores the freezerendering command and also does not distance cull by cull distance volumes.