For a device using a Realtek Ethernet chip, please download the following driver
For a device using an ASIX Ethernet chip, please download the following driver
To download the drivers, go to Software & Tools > Drivers > USB Ethernet ICs > AX88179 
If your laptop is a MacBook with an M1 chip, update to the latest version of macOS.
Try this device with a different laptop and see if the issue persists.
- For the ethernet cable:
   Confirm the maximum speed of your Ethernet cable
   If possible, plug your network cable directly into your laptop's Ethernet port
   and see if you get a faster and more stable internet connection.
   Try a different Ethernet cable.
- For the router:
   Confirm whether or not your router can support a higher Ethernet speed.
   Try a different router.
- For the dock:
   Try the dock with a different device to see whether you get a faster-wired 
   internet connection.
   If you’ve tried the above tips and the problem persists, please contact BenQ 
   customer support for further assistance.