Hi Mik, well the main thing that you would probably want to avoid is using Output: N-gons, because Octane might not like to handle polygons with a whole lot of points in them. So either "Quads & Triangles" or "Triangles only" would be fine, it will probably not make any difference between those except "Quads & Triangles" will make a slightly smaller file size.

- Michael

Thank you, Michael.
I've tried both settings and I really didn't see any visible diference in render image.
Mik

... only small update

it is better to use for Octane render (ver. 4.04) mesh export "Quads & Triangles" with CHECKED "Weld vertices along edges" (MoI ver.3).

This configuration generate smaller file, as Michael mentioned, and "Weld vertices along edges" allows to use function Rounded edges in Octane:



... without checked "Weld vertices along edges" function rounded edges doesn't work correctly:



Function Rounded edges helps to render more realistic pictures without needs to edge filleting in CAD programs.

Ciao
Mik