Following instructions are provided without any warranty, and may even get you in trouble legally. The instructions are provided for testing, learning, preventing e-waste, and should be use with care. We (including contributers + commentators) are not responsible for any damage to your device(s) or any legal issues.
Instructions have been moved to https://github.com/francoism90/asus-router. :)
@pewpewpew47 Could you try forcing 802.11ax in the WiFi settings? You may also need to adjust some parameters.
It could indeed also be the Intel card not accepting the connection as it should.