Sorry about this, but…
1.) There is an issue that HDRI environment rotation doesn’t always match from Raytraced/Cycles to any other mode capable of displaying them such as Rendered.
2.) The HDRI environment brightness can vary more than the weather, such as 1 or .2 to achieve the same brightness, depending on which machine I uses, whether or not Rhino has been restarted recently.
3.) Additionally, currently, Cycles appears incapable of rendering a Path Animation. I get the background, but nothing rendered. On the screen it renders one coarse pass, and then moves on to the next frame, like this…
I tried the samples at both 1000 and 5000, but I am getting a sample count or 1, or just the background in the file.
Perhaps I will dust off the ol’ renderer and give that a try. I didn’t strongly dislike it, it’s just that I found it challenging to get things dialed in, well that, and Cycles’s emissives rock.
The V7 beta has the same issue.