I have a fun issue if I connect my PC to the KPN router via LAN I get 920mb/s but if I connect that same cable via a second router or a LAN splitter the PC the speed drops to 90mb/s on LAN.
The wifi is running at 700-800mb/s on the same LAN but the best I can get the PC is to 90mb/s. I tried to adjust the Ethernet connections (speed & duplex) from Auto but I can only set it to 100 mbs not 1.0G as a value.
The link speed receive/transmit seems to be defaulting to 100/100 mbps if I run the LAN cable into any other device such as LAN/Splitter.