Hi all, I just bought and hooked up a TP-Link TX401 10GB ethernet adapter from Amazon. It's an internal PCIe card and apparently, from what I have researched so far today, uses a Marvel controller (Aquantia AQtion chip). I have 5Gbps fiber from AT&T and repeated speed tests to the AT&T router show I'm getting a bit over that, usually between 5 & 5.5Gbps, so the connection is fine.
I am connected by a new Cat 6A cable (6') directly to the only multi-gig ethernet port on the AT&T router, which is a 5Gbps port. Most of the time if I run a speed test to speedtest.net I get anywhere from 4.3Gbps to 4.7Gbps up and down, which is acceptable. However, anytime I wake the pc from sleep it seems to cut both upload and download to the 2.2 - 2.4Gbps range. I can either reboot or disable/enable the adapter and speeds go back to normal, so it's a fairly simple workaround. And honestly, even at 2.2Gbps it's more than fast enough, but it just bugs me that this is happening.
I've messed around with settings on the adapter but nothing really changes the issue. One thing I thought might help was changing Power Management to uncheck the "Allow the computer to turn off this device to save power". But that made no difference either.
If anyone has experienced a similar problem or has any suggestions I'm glad to try them. Like I said, it's not a critical issue as I have a decent workaround, but I just hate when things don't work like they should and especially when I don't understand why not.