Yes,it is one of the way to increase your download speed.Other ways to increase your internet download speed
* Check to see if faster internet connections are in your area:
Fiber optic and cable internet tend to be faster than DSL and dial-Up.
*Do some basic maintenance on your PC:
a scan disk, a virus scan, a malware scan, and clear your recycle bin.Delete old files and temporary files.
* Reset Your Modem
Sometimes switching OFF and ON your modem helps you to speed the internet.
* Do not simultaneously open many tabs or download many files.
After you have tried some of this,try your connection again using Scanmyspeed.com and see if you get improved speed results. If you are not satisfied Call your Internet service provider (ISP) and check whether upgradation of your plan is necessary.