Restores take unusually long - over 22 hours. Is Acronis De-dup broken?

Using Acronis Backup 11.5 Advanced for PC and backing up to a Managed Storage Vault configured for De-duplication. Last year had an issue with Backups, they would take up to 3 hours or longer to backup a hard drive, which is way to long. It was like one day the backups were taking about 20 minutes, then the next day, everything took over 3 hours.

So spent months with Acronis support trying to resolve the issue, having them remote to the server and check the configuration, ran the Acronisinfo tool to gather all the logs and info of the server and uploaded it to their FTP site, checked the network and the storage device, and did just about everything. The end result that Acronis recommended was to configure the backup so that it does the De-dup at the destination instead of the source. Once I did that, the backups took about 15 to 20 minutes again. Cool.

What was not so cool, was that on Monday I needed to do an emergency restore of a hard drive on some production equipment that we couldn't afford downtime on. I did an updated backup just after Christmas so thought perfect, and updated backup meant that it would require little configuration after the restore. So started the restore at 4:16 PM on Monday. By 6PM it was still at 15% restored. At 8PM, it was at 17% restored. Came in the next day and at 9AM on the Tuesday, it was still only 71% restored. When the restore was completed, the dialog box said that it completed in 22 hours and 15 minutes.

Did some searching and found that other people were having the same issue. Seems that doing the restore from a De-dup vault requires Acronis De-dup to piece together all the de-dup pointers in the backups to restore an image.

Is anyone else having this issue? Does Acronis De-dup actually work for anyone? Has anyone resolved the issue?