I have an issue whereby users can't see the 'Modified By' or 'Created By' columns on my SharePoint site (the columns are blank).
This issue affects all users, even those with full control.
I've found a quick fix by going into Central Administration > Application Management > Policy for Web Application, then ensuring the users have the following permissions:
Manage Personal Views
This however makes the site extremely slow for all users.
Does anyone know how to fix this please?