Asus ha velocemente rilasciato un nuovo aggiornamento, che mi è stato riportato essere risolutivo:

codice:
ASUS GT-AX6000 Firmware version 3.0.0.4.388.22068

Versione 3.0.0.4.388.22068
54.82 MB
1. Improved system stability.
2. Fixed the IPsec VPN compatibility issue with Win10.
3. Fixed the VPN fusion user interface issues under the HTTPS connection.
4. Fixed Client DOM Stored XSS vulnerability.
5. Improved Wireguard performance.
6. Fixed the WAN setting GUI bugs.

Please unzip the firmware file first then check the MD5 code.
MD5: 38bc8628f5bf44f001dc0f554036620f
Ciao!!