After two weeks of testing on a Windows 11 Pro (23H2) machine with a 1000 Mbps fiber connection, here are the real-world results:
The Realtek RTL8812BU is a highly capable 802.11ac Wave 2 chipset. It supports dual-band (2.4GHz and 5GHz) and speeds up to 867Mbps (5GHz) or 300Mbps (2.4GHz), totaling a theoretical link speed of 1200Mbps. rtl8812bu driver windows 11 top
However, Windows 11 introduced stricter driver signing requirements (WHQL) and architectural changes to the network stack. The generic drivers that Windows Update automatically fetches are often outdated (from 2019 or 2021) and suffer from: After two weeks of testing on a Windows
To get the top performance, you need a modern, properly signed driver. To get the top performance , you need
Reboot your PC.
With the correct driver and settings, your adapter should achieve:
If you are seeing significantly less, your driver is not optimal.