Extremely slow response when opening or replying to ticket


i recently installed Awesome Support plugin, on a VM with 4CPUs, 16GB of RAM running Apache 2.4, Mysql 8 and PHP 7.4.
The wordpress installation is completely bare and i have only installed Shibboleth plugin additionally.

The Awesome support plugin is great so far, except that is extremely slow when opening new ticket from the frontend or the backend and when replying to a ticket.
For example it may take up to 50 secs to a minute to create a new ticket or reply to a ticket.

Is that behavior normal? What can possibly causing it?
Thank you in advance.


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