Adding nMinDRBackupBeforeStubbing and nMinDaysBeforeStubbing and setting to 0 would take Delayed Stubbing out of the operation. Those settings shouldn't be kept in place, but only utilized for testing (they are in place to protect data, in the event of a DR restore).
I would assume your content isn't qualifiing for archiving. I would say double check that your content will be archived, according to your subclients Disk Cleanup settings.
Is the file: "FSTurboStubbedFiles.cvf" present within the JobResult directory of the proxy?
Do you see itmes within the backup "View Backup Items" option?
When you browse the latest data, Do you see the content displayed as backed up?
Are the subclients Filters interferring with the content from qualifying?
Are you trying to archive any of the following extensions, because they will not be archived: