Hm, I don’t know, the screenshot is with more than 13000 Spheres (not 2K) and that is expected to be slow, but with 80 Particles it shouldn’t be a problem at all….
Try Cubes instead of Spheres and make sure to change from Convex Hull to Box (for all of them, of course).
Also not sure if the Text shouldn’t be converted to a Mesh?
