Reserved Bandwidth

20% of your available bandwidth is reserved by default by Microsoft

This affects the Broadband performance.

We can get back this 20%

Click Start-->Run—>type  gpedit.msc

This opens the group policy editor.

Go to:
Local Computer Policy-->Computer Configuration-->Administrative Templates-->Network—>

QOS Packet Scheduler->Limit Reservable Bandwidth

Now, Double click on Limit Reservable bandwidth.

It  shows that it is not configured,

"By default, the Packet Scheduler limits the system to 20 percent of the bandwidth of a connection, but you can use this
setting to override the default."

We have to set this to ENABLE and then set it to ZERO.

Now the reserved bandwidth is retrieved!!!!