Very slow config backups on Fortigate FWs (NCM 7.2.2)

Hi

I am attempting to backup Fortigate FWs using the NCM.

I am having two issues with the backups

First is that it is taking roughly 4 hours a device to complete over SSH and I have around 80 devices to be backed up.

Second is that when the job finally does complete I see alot of connection refused errors in the log. If I go to these devices individually and laugh a backup from the web console or the NCM application they complete with no issues.

Has anyone seen issues like these before and have anyway to resolve them ?

Thanks

Richie