Well, that will teach me to pay for Plus... Gray Screens in Editor

Got my new laptop today (Samsung Notebook 9 Pro 15) with the nice AMD Radeon 540 discrete graphics. Setup Unity and did the upgrade to Plus. Now when I open a project in Unity and go to any window but the "main" window and it will flicker to show what "should be there" and then change to all gray. I have made sure I have the latest versions of both Unity (2017.3) and the Radeon drivers. I note that it is defaulting to DX 11. I have seen other apps have issues on WIn 10 if they don't use the DX 12 option. Would forcing on the command line (I assume there's such an option) likely fix this? Known issue with AMD drivers? Other suggestions?

 

Yup, turns out the trick was to force Unity to DX 12 with "-force-d3d12" even though the online manual only mentions DX 11. Leaving this here so I remember in the future