Really slow when adding user or registering

We are evaluating ERPNext at work by having it hosted to our Ubuntu 20 server. The version we have installed is V12 and almost everything is runs smoothly except adding users through Users and Role in the settings, and registering users at a log in page. It is extremely slow and the connection time out more often than not.

Also when clicking on each user, the user detail page will not load fully sometime.

If anyone has run into a similar issue, I would be very appreciative if you can point me at the right direction. Thank you :slight_smile: