@thomasfuchs @gsuberland Make sure you install the latest driver from the network card chipset manufacturer, especially if it's a Realtek card (but also Intel; if it's Broadcom, buy an Intel or Realtek card, they'll work better). For wired NICs, both the inbox drivers, and drivers from Windows update are problematic (for wireless NICs, download the latest driver offered on https://catalog.update.microsoft.com/, it'll usually be newer than what Windows Update installs automatically, and getting WiFi drivers from chipset manufacturer seems to be practically impossible).