Windows 7 Remote Desktop Connection is slow how to do Windows 7 Access windows server 2003 through Remote Desktop Connection is slow. The following method is used to immediately solve (improve) my problem. Windows Vista comes with the receive window auto-tuning function, which can improve the performance of programs that receive TCP data over the network. If you enable auto-tuning of the Receiving Window for WinHTTP communication, the data transmission efficiency on the network may be higher. However, in some cases, if the routers and firewalls used by the network are outdated and do not support this function, data transmission may slow down or cause connection interruption. How do I disable the auto-tuning function of the receiving window? Open a cmd window with administrator permissions and run the following command: 1 netsh interface tcp set global autotuninglevel = disabled