Sorry all, I wish bump factors would get fixed and be the same between Rendered and Raytraced. Set RhinoCycles BumpStrengthFactor to .01 and you’ll get my results. @andy
Yes, I was querying whether they should become document-specific instead.
The suggestion is that @BrianJ has changed the values to get a different render effect. But presumably the defaults for those settings were there for a reason. That seems to imply that different render scenarios may want different settings, hence my wondering if they should be made document-specific.