Time taken to restore a deleted Group

Hi, i have had a user accidently delete a O365 Group, the group has 191GB of files storage in the Files section.

I have selected the Restore Group option within the admin centre for this group but does anyone know how long the restore takes to complete?   I actioned this around 4 hrs ago, i can see the group and access the mailbox but at present there are no files showing?

Any Help would be much appreciated