SSR with Pimcore data-hub, e.g. with Gatsby.js

Hi,
I was wondering if anyone has experience in using a static site renderer with Pimcore data-hub, such as gatsby.js, gohugo.io, 11ty, gridsome or alike? My use case is a multi-site (multiple domains), multi-language editorial sites setup with roughly 200k pages alltogether.
Gatsby community can be very slow when it comes to >50k pages, as far as I understood, but any known limitations on the data-hub side?