Hi there,
mmm… Interesting finding. We need to check that for details. One thing which will help us a lot is that you gave us the template file of the temporary page you have created on the local machine. You can do it by accessing the page and click on templates:
Then click on save and then click on download. Then upload that file to a file sharing service and give us the link so we can have the same case at hand without having to create all those stuff ourselves.
We can test that in our installation. This is usually heavily dependant on the server setup. So, for example, you can increase the PHP memory limit to 512MB and make the PHP Execution time limit 300s.
Thank you.