Export Insight Objects using User Friendly format results in 504 error

Issue Summary

Trying to export a large amount of objects with references to other object types results in a 504 HTTP error.

Steps to Reproduce

1. Step 1: Open an object type with a large amount of objects with references
2. Step 2: Try and export it with User Friendly format

Expected Results

A .csv file should be generated and downloaded

Actual Results

A 504 http error is raised and an error screen is shown to the user.

Workaround

Choose "data consistent" in the Format drop down when exporting the objects.