I'm on build 10122. After an hour or so of operation I lose all network access by Ethernet using the built-in Broadcom NetLink Gigabit adapter. If I plug in a USB WiFi adapter all network and internet access is okay. Reboot and the Ethernet access works again. I believe this may have been happening on earlier builds less often but I didn't use them on a regular basis as I am now trying to do with this build. The device manager says the Ethernet is working properly but the Ethernet Status clearly says there is a problem, see the picture below. The driver update says it is installed and is the latest version. Meanwhile the system appears to be trying to make the Ethernet connection as DU Meter is indicating a constant 123 kbps upload that it doesn't normally do. I'm sure its the Ethernet adapter because if I "disable" the adapter then the 123 kbps stops. However the disabling never finishes and the driver/adapter won't uninstall.