Rancher Backup Operator - Time required to backup / restore / migrate

I’m testing backups on a Rancher 2.6.2 installation, and right now I’m trying to restore a backup of a server where there was aprox. 300 connected clusters. The backup was performed on an installation over K3S with two nodes, and it it was completed in less than 5 minutes.

When I try to restore that, on the same server or migrating / redeploying in a new cluster, I have more than 1 hour running and it still doesn’t finish. Is this normal?

In previous tests, with far fewer clusters connected, the execution was much faster (I think restored in less than 5 minutes).

Is there some metrics available to know what to expect?

Thanks in advance.