It seems like the particle display options in the display options dialog also affect geometry points, for size. Is there a way to control them independently? I want geometry points to be bigger, but for particles I want the particles to be very small (1 pixel or so).
Not currently, no. Particles and points are both treated as points. You could try rendering particles as Discs (Geometry tab), and set that to a small value, and see if that does the trick.
Thanks Mark, I checked the Geometry tab but couldn't find that option. Do you mean using a Render POP? Because that has an option to render as discs, but not in the viewport I think.
Also do you guys have any plans to control their display separately? Since you said "not currently", but not "not planned"