Hello,
If you open a support ticket (https://www.phpdocx.com/support) with a script that illustrates your issue without doing external connections (such as databases or web services) the dev team will run it on the test servers to check its performance. They need to run the script changing only the path to phpdocx and to the DOCX ouput; so it should't include frameworks, CMS and other external codes.
Regards.