Have setup RD for Win 7 64 Ultimate (both boxes) on internal LAN. Connects no problem and the LAN operates at almost full Gbps when moving files between the two. I've disabled the A/V and firewall (Kaspersky A/V 2012 on client, MSE on host) but no changes.
Even with all the RDP options stripped down it is slow. Should it not be at virtual speed even with all the bells & whistles across the LAN?
My problem was solved this way:
1. Open IIS Manager
2. Right-click on Default Web Site, Manage Web Site, Advanced Settings...
3. In the window that opens, expand Connection Limits
4. Go to Maximum Bandwidth (Bytes/second)
The value should be at least 10 million (10000000)
5. Click OK and the speed should immediately increase.
If you have a fiber optic Internet connection to the server, make it a billion.