Weird Foliage Cluster culling

I read a little in the documentation regarding clustering, in response i setup many different procedural foliage spawning volumes. However, either using just straight landscape painted foliage, or bigger PFSV’s or many smalelr ones, the foliage clustering always culls in weird and unpredictable manners.

Video showcase of this issue

Please advise how to setup instanced foliage with larger landscapes, thank you,

My culling volume, disabling culling volume resolve the issue, but i rather want to use a volume additional to foliage cull settings.