That does seem like quite a large state file. Would you be able to shed some light on the sorts of of resources that you're provisioning? I've found it to be useful to split dependencies between cloud resources, and to add links via data lookups. At any reasonable scale, I've found splitting Terraform state to be crucial.
For example: network resources and Kubernetes clusters are created separately, and networking is a required dependency for Kubernetes clusters. Resources are associated with environments and regions, and modules take in environments and regions as parameters.
In my setup, we have 200+ state files, and the largest is around 80KB.
