I am using Windows 10 Creators edition. When connecting to my Virgin Media home network via a Broadcom NteLink Gigabit ethernet adapter the connection is being throttled back to about 9.6mbps. If I uninstall the adapter and then let Windows reinstall it I am then able to receive around 87mbps (on a Sunday afternoon). The network is capable of delivering 200mbps but I consider 87 to be adequate at that time of day.
If I shut down and restart the computer, the speed drops to 9.6 again. There is something in the computer's software that is causing this. If I plug the same cable into my laptop the connection is fine.
The computer is a Dell Vostro 430.
Does anyone have any ideas what might be causing this please?