I have a similar issue, with Type-C->Displayport. Monitors turn on, but either in the wrong resolution or wrong frame rate. I can force the resolution or force

I have a similar issue, with Type-C->Displayport. Monitors turn on, but either in the wrong resolution or wrong frame rate. I can force the resolution or force the frame rate. I'm glad I took a 3 week vacation right when I upgraded, because I can't get any work done with only a single working 16" monitor. (However, I can't even remotely get the same setup working in Linux on the same machine so I can't really blame the walled-garden for this frustration)