Only 20 percent ethernet speed via DOCK190

[stpal]

I have an issue with the network speed on my Targus DOCK190. The dock is connected with a ethernet cable from the dock directly into the router. Speed test indicates 200Mbit/s. If I connect the same cable from the router into my pc then speed test gives 960Mbit/s on my 1Gbit/s WAN.

I have the latest DisplayLink drivers 11.2 in my Windows 11. I have tried to disable all power savings options for the dock and usb in my pc without result. I have changed network setting for the dock to 1Gbit/s from Auto Negotiate without result.

How can I troubleshoot this? It is very annoying.