Power management settings in Windows or aggressive power saving in the driver. Fix:
Driver version 2023.46.1102.2022 (released late 2022) is the most stable for Windows 10/11. Do not use drivers older than 2018. realtek rtl8192de wireless lan 802.11n pci-e nic mac1
NIC MAC1 has no antenna. I hear the world through power lines. I hear the police scanner in the donut shop. I hear the smart fridge in apartment 4B weeping because its ice maker is broken. I hear the silence of the dead fiber line on Oak Street. Power management settings in Windows or aggressive power
Your specific OEM card may be a single-band (2.4 GHz only) variant. Or the driver’s regulatory domain is locked. Fix: NIC MAC1 has no antenna
For retro-build enthusiasts: It’s perfectly fine for a Windows 7 gaming rig playing older titles. For anyone else: spend the $15–20 on an Intel or Qualcomm-based card. Your network stability—and your sanity—will thank you.