The best way to increase download speed on Steam – use the content servers. They are copies of the main master server of Valve, which stores all the downloadable games available for the users of the service. Official content servers are often loaded with them and the jump is very slow because it makes sense to use other mirrors.
Select the most nearest to your location, a content server using the corresponding function on the website Steam. View the data on the server. If he's given any load, except zero, so they can use. If the name of the mirror is specified [FILTERED], so they can only use a limited number of users.
Go to settings in the Steam client. To do this, open the program window and click Steam – Settings. Then navigate to the "Downloads + Cloud". In the "download Region", select you found the server. After that, apply the changes by pressing "OK". Then restart the client.
After restarting Steam will use the specified server. Try to download any game. If the download speed has increased, so all their settings were correct.
If you want to maximize the speed of downloading games in Steam, it is desirable to turn off other Internet programs running on your computer. So, the included torrent client can dramatically decrease the performance of other programs. You should also disable all kinds of download managers, browsers and other applications that transmit data over the Internet.