Try do the following instructions
1.Get a download accelerator
2.Turn off all unused apps while downloading
3.Don't upload information while you're downloading
4.Update your network device driver
5.clear your temporary download history files.
6.Use latest version of any browser
When i had the same problem,i followed the same ways.I am sure,it's very useful to increase your,both upload and download speed.Then you can check your new internet speed using ScanmySpeed.com