Depending on the size of your server's cPanel accounts, automatic backups may take a very long time. If you have a sufficiently powerful server, you may increase the priority of the backup job.
To change the cPanel backup priority, navigate to the Home >> Server Configuration >> Tweak Settings page in WHM, then select the System tab. Lower the value of the following option:
Note that a lower value results in a higher priority. It is necessary to evaluate your server's available resources and choose an appropriate value that will not have an unwanted impact on server performance.
For more information about this option, please refer to our documentation.