J.C wrote:I haven't, I'm writing about Blender ORBX exporter.
Are you opening this ORBX
in Blender after exporting?..
ORBX is an Octane standalone format, it is nothing to do with Blender. Blender just offers you an opportunity to export the Blender scene into ORBX, translating the Blender's nodegraph to Octane format nodegraph that standalone can understand.
So, if you are talking about rendering ORBX - you are talking about standalone.
Octane standalone does not have such setting as "geometry type". So, if e.g. you export all geometry as "Global" and some of this geometry is animated - you will end up with the geometry re-evaluated every frame in standalone. Read please the section of the manual about geometry types...