I’m running an Alienware Alpha R1, which uses an NVIDIA GeForce GTX 860M (not in your list).
I went ahead and updated my system to KB5075912 and verified my system still completely freezes when starting Zwift. I rebooted and enabled the Windows KB Workaround and Zwift is now working for me.
Thank you!
Edit: I’m running Windows 10 with the Extended Support License