The default brcmfmac driver combined with standard brcmfmac43430-sdio.bin firmware often causes:
git clone https://github.com/your-source/rtl8811au_patched.git cd rtl8811au_patched driver wlan usb 20 ctwn4320z patched
to a folder like C:\Drivers\CTWN4320Z_patched the need for a patched driver.
Remove conflicting modules:
Thus, the need for a patched driver.