Particles not WYSIWYG

[Peter M. Gruhn]

Yeah, not really "architectural"...

 

Max 9.

 

Fairly simple Particle Flow system. Shape is Facing. There is a relative scale. Speed is follow surface. I have 100% visible turned on in the Particle View of PF Source "Visible" and in Modifier tab Viewport% and Render%. The leaf material is 2 sided.

 

The viewport particles and the render particles do not appear in the same place or at the same size. See attached.

 

Is this something weird that nobody has ever seen?

Is this because I haven't checked the "do it right" button?

Is this a known issue with known or no known solution?

Is this a "get used to it, what do you want, perfection" issue?

 

I know not.