My download stalls at a certain percentage or stays at Download Starting/Stopping
The issue is usually from a router interfering with the download process. Please unplug your router and connect your computer directly to your internet connection to test the issue. If this corrects the issue, please resolve the router issue using this guide: Troubleshooting Network Connectivity
Try launching the stalled game by double clicking it. This may allow the download to finish.
If the issue persists, please double check your current download region:
If you continue to see this issue, please exit from Steam and rename the ClientRegistry.blob. Restart Steam to replace the file and then finish the game update.
Make sure your Internet Connection setting is correct for your current connection:
In the Steam application, Click Steam > Settings > Downloads tab and make sure the speed is correct.
Incorrect settings may affect your Steam downloads.
The issue may also be due to other programs interfering with Steam. Please complete these guides to further test the issue:
Please make sure to specify a 56k connection in the Steam settings menu . You may also manually make that setting in your registry:
Go to Start > Run in Windows
Navigate to: HKEY_CURRENT_USER\Software\Valve\Steam .
Right click on "Rate", select Modify and set the value to 3500.