I encounter a wired issue rencently, PIE alyways print a msg like this:
‘Nanite is used in the scene but not supported by your graphics hardware and/or driver. Meshes requiring Nanite will not render’.
My GPU is AMD 6900 XT, I use dx12 renderer.
Every thing is ok but a week ago maybe, It always print this.
What’s wrong with it and how to resolve?
Have you tried rolling back video driver?
I Resolved it by disable the RenderDoc. 
Where??!!