@chinkey I ran a few tests yesterday. I used the speedtest-cli application with a USB dongle. In the first test I connected a USB 2.0 Ethernet dongle to my laptop and got around 90 Mbps. I then connected that dongle to the RB5 USB port and also got about 90 Mbps. I then tried a USB 3.0 Ethernet dongle. On the laptop I saw about 520 Mbps but was only able to achieve about 250 Mbps on RB5. So I think that's pretty similar to what you were seeing. It's unclear at this time why there is such a difference.
