Siavash Tehrani

Make sure internal reflections are enabled (Render Geometry Settings).

One thing that can be handy is the "follow current node" toggle in the Scene Graph Tree pane. When it is disabled your SGT will only show the scene graph of your currently displayed LOP. When it is enabled, it will show the scene graph of whatever LOP you have currently selected, causing it to re-evaluate the stage every time you select a different LOP.

AlekseiM
as I wrote in the first message, I have already tried to make a proxy in the form of a simple cube and even in the form of a single point, it is quite funny when simply imported points work perfectly 120+ fps, and assigning one point to these points as an instance completely breaks the display and drops performance by 1 fps, while visually they are identical

You are right Aleksei, once the point count goes into the tens of millions, the instanced points display slower vs loading the raw points. I wonder if that's expected behavior due to some kind of overhead? Maybe SideFX can chime in.