nprofile1qyt8wumn8ghj7un9d3shjtnyd968gmewwp6kytcqyqghvnzs5n4kl8vr2z8vxr3qd5gfyqwjnzsaf09ha03rje96apwwj33e330 (nprofile…e330) nprofile1qyt8wumn8ghj7un9d3shjtnyd968gmewwp6kytcqyqje45r60d95lp47ls8uaxwr00jadzjstjr0fhx4xt8rvw7q65chclxxlvy (nprofile…xlvy) I guess my numbers are a bit skewed towards the times when I had slower hardware, but still: I just launched this test with 1000 spheres gravitating & colliding via an N^2 algorithm and the simulation takes 10ms per update. That's ~20ns per one particle-particle pair, which seems reasonable?
Given that you generally need to do a ton of other stuff per frame, the actual particle count limit is somewhere in the hundreds.