Issue Summary

When exporting PDF files on the space level using the "custom" option to select specific pages, the PDF export is very slow despite selecting only 1 page with not a lot of content.

Below is an example of an export with space that only has a few pages containing just a few text:

In some cases, it goes all the way up to 1 hour or more.

The issue only seems to impact the custom export. Page-level exports are performing better.

Steps to Reproduce

1. Export a space using the "custom" option
2. Select one or two small pages
3. Start the export

Expected Results

PDF export finishes in a reasonable amount of time

Actual Results

PDF export takes much longer in relation to the amount of content within the selected pages to be exported

Workaround

Use page-level exports