[projct]

This is the most common slowdown I've seen in rails before. strict_loading mode can help, as can the bullet gem.

That said, it is also quite slow when you actually do need requests per second or rows per second, but the usual thing is to throw more machines at it,reduce the amount of magic in the hot path (like activerecord-import for bulk data if that's still maintained,) or use something else for the hot path.