Microsoft reserves 20% of your available bandwidth for their own purposes like Windows Updates and interrogating your PC etc.
By unreserving this bandwidth, you can make your internet connection faster.
Here are steps 1. Click Start then Run (WindowsKey+R) and type gpedit.msc .
2. Then go to Local Computer Policy>Computer Configuration>Administrative Templetes>Network>QoS Packet Scheduler. Click on QoS Packet Scheduler.
In the right side , find Limit Reservable Bandwidth and double click on Limit Reservable Bandwidth.
3. It will say it is not configured but the truth is under the ‘Explain’ tab. Select ‘Enable’ and set reservable bandwidth to zero.
4. Apply and your internet speed increased.