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Question Questions on Windows 10's InterfaceMetric

Hi, my PC is in a separate room from the router. Usually I have no problem in downloading stuffs through wifi but today is very slow for unknown reason. So I connected one end of a CAT6a ethernet cable to the 1G port at the back of the router and another end to my PC which as a 1G and a 10G Ethernet ports (tried both). I followed the steps shown in the link below.


In Windows 10's Settings > Network and Internet > Status, both Ethernet and Wi-Fi are shown. Under options to change adapters, I see Ethernet, Ethernet2 Wi-Fi 2, VMware Network Adapter VMnet1 and VMware Network Adapter VMnet8. In addition, a Bluetooth Network Connection icon has a red cross in front.

Q1: How come when I went to PowerShell as an administrator and executed a Get-NetIPInterface command, Ethernet 2 is not shown?

Q2: Ethernet has ifIndex 11.
I executed the command: set-NetIPInterface -InterfaceIndex 11 -InterfaceMetric 1
and used Get-NetIPInterface to confirm that the InterfaceMetric for Ethernet has been set to 1.

Does 1 mean the highest priority? I think I read that the lower the number the highest the priority. I have not seen any guide using 1 though.

Q3: In this setting, does that mean if there is a wire connecting the PC and the router, the ethernet card will be used. However, if the cable is disconnected, the PC will automatically use Wi-Fi2 which has an InterfaceMetric value 35?

Q4: How come even a cable is used, under Downloads, the connection is jumping somewhere between around 9.6KB/s and 30KB/s? Most of the time around 10KB/s. Seems to be quite slow especially if the ethernet connection is used.
 
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