Speaking of dropouts/lags in service, I have been getting the "Slow Ethernet LAN link" status for awhile, coupled with short dropouts. Starlink sent me replacements for the router, Ethernet adapter and cable. After I installed the parts it was about the same, with frequent sub-second dropouts.
Yesterday, I decided to get to the bottom of the "Slow Ethernet LAN link" error. I have a wireless link from the Dishy location to the house because of obstructions, so my Ethernet path is SL router<->Ethernet adapter<-> indoor surge protector (protecting from Dishy generated surges)<->PoE adapter<->outside surge protector <-> wireless link. I put a small Ethernet switch in downstream of the first surge protector and got a momentary 1,000Mbit/s link, which then dropped to 100Mbit/s link in a few seconds. So I pulled the surge protector and put the switch downstream of the SL Ethernet adapter, which generated a 1,000Mbit/s link, so I added the downstream portion of everything else to the switch and got a second 1,000Mbit/s link. I double checked the SL app, and the app showed ""Normal Ethernet LAN link", aka 1,000Mbit/s. Finally, I pulled the first surge protector and put it into its own port on the switch, and noticed that the switch's LEDs for link status both had a faint glow.
What I think is going on is that the Ethernet link negotiation electronics on the SL Ethernet adapter are either very sensitive or weak, and can't take the added draw from the surge protector leakage, and the switch repowers the signal strength enough not to degrade the link.
Why care? Well, Ethernet bandwidth is on the order of 70-90% of the link speed (artifact of the design due to packet collisions). So a 100Mbit link runs at 70-90Mbits/s, tops. Getting a 1,000Mbit/s link up means that Starlink can zip along at full speed whenever the satellite link is faster that 70-90Mbits/s. For me, here, downloading, the link upgrade is noticeable.
All the best,
Peter
P.S. FWIW This is the indoor surge protector that I am using; and it does seem to support 1,000Mbits/s at the house.
This is the outdoor surge protector that I am using, ca 2' from the wireless links;