Hello .
Here's a KB article about optimizing backup speed: https://kb.cloudberrylab.com/standalone-backup/general/how-to-increase-upload-speed

To provide a more detailed response we would need more information on the system - I'd recommend contacting our Support Team right here: https://support.cloudberrylab.com/portal/home

Thanks Gleb,
I followed the KB article and i hope to optimize the backup.

cool! Let me know if it doesn't quite help