Help understanding simulated physic bodies for a soccer goal net

I am trying to create a soccer goal net similar to this video:

https://www.youtube.com/watch?v=ri2gSJ2McVA&t=5s

For testing purposes I am using a single plane and have rigged up a simple armature in Blender. The border vertices are assigned to bones that do not move while the rest of the bones have been weight painted. None of these weights touch the outer vertices.
After importing to UE I have setup physics bodies and constraints. The outer bodies along the edge of the net are set to kinetic while the inner ones are set to simulated. The constraints are created all along the rows and columns.

As you can see from the video, the top row and left column of the simulated bodies hardly move at all while the rest seem to work fine even though these all have the exact same settings, linear and swing motions are set to limited.


Here is a screen shot of the constraints settings:

I would appreciate and help explaining why things aren’t working as I hoped.