Set All Bodies Below Simulate Physics not working

I am following this question/answer: How would my pawn go Ragdoll and then back to animations? - World Creation - Unreal Engine Forums

When I simulate physics on all bones below the root, they don’t move until the root capsule stops moving around. It’s like the mesh is frozen and then once the simulated capsule stops rolling around or whatever, the ragdolling begins.

It works fine if I include the root bone in the simulation, but if I don’t do that, all bones below the root one stay frozen until the capsule has stopped moving.