RBSE960 Ethernet Fails / Drops When Resuming PC from Sleep

Ethernet patch cables are relatively inexpensive, so changing to a higher rated cable can't hurt.  However, when the computer is connected to the Orbi satellite port, the two Ethernet adapters will auto negotiate the highest speed that can be supported over the cable.  (see https://en.wikipedia.org/wiki/Autonegotiation )  If the cable did not support 2.5G, then the link would connect at 1G.  (The Orbi web interface, Advanced Tab, Show Statistics indicates that it is indeed connecting at 2.5G?)

It might be useful to temporarily move this PC to one of the gigabit ports and see if the situation occurs when the PC is connected there.

I had a similar situation a couple of years ago with an HP laptop.  If I put it to sleep by closing the lid, when the lid was opened again the Ethernet port did not resume operation.  Had that globe symbol on the task bar instead of the the computer symbol.  Restarting the laptop fixed it, but was annoying.  A Wireshark trace on the Ethernet port showed that the laptop was issuing DHCP requests. The Orbi was responding. But the laptop just kept issuing DHCP requests.  A Windows software update months later fixed the problem.  If you are comfortable doing so, it might be interesting to set up a Wireshark capture on the Ethernet port, put the system to sleep, wake it up again, and examine the Wireshark trace.

(this is simple on a laptop.  just close the lid.  is there a command on the desktop to "go to sleep"?)