I've noticed that the cluster SOP seems to be unstable with small numbers (< 10) of points.

See the attached file. If you scrub through toward frame 48, you'll notice that when almost all the points are deleted, the clusters “jump”. On my system (v 12.5.427), I'm seeing it at frames 45 & 46.

Can anyone else confirm this behavior?

(Also weird: the add SOP seems to be adding a default primitive that I can't get rid of. If you view either of the add SOPs in the network, you'll see a little blob of geo at the origin.)