Cheers for this! I'm not sure why this works though. I created a 2GB volume as well. After running the Unraid USB creation tool it's back to the full 8GB of the stick though. Anyway, my gen8 started Unraid after this, so all is well thanks.
I can see that your network interface is coming up at 1000Mbps. Maybe you have the same issue I have, which is actually having 1000FDX speed, but ethanol and Unraid reporting 100FDX. See the post you referenced where I put in some info, and run a speedtest.