I have simple RealFlow scene imported into Houdini. It contains a Terrain object, a Fluid Mesh, and RFK splash/foam particles.

When I try to render all three objects together the particles won't render (1.jpg)

When I turn off visibility on the terrain mesh and the fluid mesh the particles render (2.jpg)

When I turn visibility off on the terrain mesh and try to render the fluid and the particles, the particles render in just a small portion of the screen (3.jpg)

Any idea what is going on?