https://egpu.io/boot-camp-egpu-setup-guide/ https://www.reddit.com/r/eGPU/comments/qqbtrl/windows_11_egpu_does_it_work/ https://www.reddit.com/r/eGPU/comments/l7er2t/blackmagic_egpu_w_windows/h1qr5il/ https://www.reddit.com/r/eGPU/comments/l7er2t/blackmagic_egpu_w_windows/
Install the AMD Drivers before plugging in your eGPU and disable the internal GPU in device-manager, note that I have a working windows 10 with my razer core x plugged in. It doesn't crash but I also still have code 12 (in device manager - go to your egpu), which means it's basically useless that it is working for now, since "it doesn't have any ressource to work with (aka an external monitor... which it has....)".
Hope you can make it work and maybe just maybe u find a solution for error code 12. Cheers