Why is windows 7 remote desktop slow?

The remote desktop connection speed depends upon many factors.It depends on your computer configuration type of network and throughput overall. you can follow these steps to give a try

Logon to your Windows 7 computer with the account of your choice and at the bottom of the start menu you will find search box type mstsc in the field and press enter key to activate Remote Desktop Connection tool.

On the console window click on Options button to configure the additional settings granulary.

In the expanded box go to Experience tab from the available drop-down list choose LAN (10 Mbps or Higher). or chose your existing connection Optionally you can check the available boxes as per your choice.

After making the desired changes in the configuration click on connect this should establish a optimum remote desktop connection