Because the
Windows system also retain 20% of the network speed, the speed is mainly used to update the system, update and other system underlying the use, so we can manually update the system in the free time, as well as the application update. We also put the system limits the speed also released.
First of all, using Win+R to bring up the run box, type "gpedit.msc" to enter, and then open the Group Policy Editor, then open the computer configuration management module in the left menu network -QoS packet scheduler.
Double click to open may retain the bandwidth limit, click on the "enabled" to open. Then it changed to 10, the authors recommend, best to leave some, and then click save and exit. So you can enjoy high-speed network.