Restore database with a FileTable

EDIT:
I've finally managed to get the database restored.
It took only 124 minutes, when we changed some settings on the server.

I found the settings here: https://support.microsoft.com/da-dk/kb/2160002

and here https://technet.microsoft.com/en-us/library/cc778996.aspx

In case the links stops working: in HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\FileSystem NtfsDisableLastAccessUpdate and NtfsDisable8dot3NameCreation should be set to 1