Working USB Wifi/Ethernet adapters for CoreELEC

Hey all.
I was testing my lan speed on my M8s II 2/16 tv box with CoreElec 9.2.5 today.

  • With the built-in 100 LAN port of the box I got ~ 95 Mbits/sec

  • With my TP-Link UE300 USB 3.0 to LAN adapter (Realtek 8153 chipset) I got ~ 187 Mbits/sec
    The box only has USB 2.0 ports.

Both my Windows 10 PC and the TV Box are connected to my router with CAT6 UTP cables.
The router has Gbit lan ports. For the tests, I used iperf3. I set my Windows 10 PC as a server and the TV Box as a client.

Are these numbers OK ? I’m asking because I don’t really know what the average numbers are for boxes (and said specs) as the above.

p.s. Isn’t it weird that by reverting the scenario (setting the CoreElec TV Box as a server and the PC as a client) I got quite lower numbers: ~ 65 to 75 Mbits/sec ? The PC has a Gbit ethernet card.