Net Share disconnected after reboot

I have found the solution to my problem, I believe this will resolve it for any others who are trying to map their drives to DFS via GPO on a 2012 RDS box

Change the below Registry entry from 1 to 0

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System EnableLinkedConnections DWORD 1 

This will stop the drives from appearing disconnected, remap them as they should be, and also fix any issues with them mapping to the incorrect user folders (that started happening too)

reboot after making the change