This has been addressed in the 1.6 release...

It looks like you are at the limits of the algorithm, unfortunately. As others have written, co-resident polygons that are perfectly aligned create a precision issue that results in artifacts such as these, and the typical CAD tesselation is doing this no favors.

Can we see your scene file, please?

The guide does need an update, as many changes in Cinema 4D have occured since it was last released. For most users, if you need ACES output, it is simplest to enable the ACES Tonemapping option in Octane Camera > Imager > ACES Tone Mapping . No other settings are necessary, as Octane will ...

Cannot open this archive...

Render Settings > Octane Renderer > Main > Premultiplied Alpha — change to None.

Yes, sorry, I was referring to analytic spot lights and fog. These elements are clipped by transparent surfaces.

Analytic lights are not compatible with transparent materials, sadly.

As discussed on this page in the documentation (https://docs.otoy.com/cinema4d/Anatomyo ... iewer.html) Live Viewer is not intended for motion blur. Live Viewer will do it's best to show it, but the main focus of LV is lighting and materials. Please review that section for more.

Beppe for the win!