From a tech support point of view (just going by what some people say on these forums), quite a lot of people are missing the ShaderConfig macro validation step, or dont understand how to make a local copy of the hd config package so that the changes to that file stay.
Is there any clever way you can make the DXR wizard give a warning if the SHADEROPTIONS_RAYTRACING macro isnt set correctly?
And an easy link to proper official instructions for copying hd config package to a local location would be good, I make a bit of a long mess when I try to explain ways to do this, any my way might not be best way.