Getting Acceleration of a Skeleton Mesh Bone...

I have been struggling to come up with an accurate way to sample the acceleration of different points on a rag doll at a high rate using blueprints. I am using the point-slope formula (dV/dt), with velocity from the “Get Physics Linear Velocity” node. Through this method, I get spikes of extremely high acceleration from a very small fall with normal data in-between spikes. Is there a cleaner way to get the acceleration using blueprints? I have Rama’s blueprint plugin installed.
This is my setup: