So for people who have tried windows 11 on real hardware (not vm) do all your windows 10 drivers work? I couldn't get my Realtek Aquantia 5G LAN drivers to work. just kept saying they were not signed.
According to what you wrote seem clear that the problem is the certificate not the functionality of the driver itself (I'm using some vista drivers under on my old test machine, which are working better than in post 1803 W10 builds). You can disable the signature enforcement, install the drivers, then (eventually) re-enable it, depending where the problem lies they may still work.