Got a strange issue.
I am building a new Server 2012 domain, and for some reason I can only log 2 people on via RDP at a time.
The licensing server is configured with licensing and all RDS quickstart roles, and set to auto-detect. I had 9 people logged into one server at one point, so must have been working .
All domain and local group policies on DC, License Server and staff server I am using (as if it were a 2003 terminal server) are set to allow unlimited remote desktop connections, so I can't see why it's not working