Trouble with physics after migrating to 5.3

I developed a simple mobile game in 4.7 in which you catch ice cream scoops that fall from the sky until you eventually have a tower of ice cream scoops.

The game uses a heavily distorted version of the physX simulation so the scoops can get stacked with little difficulty, to achieve that I was using angular damping and inertia tensor scale to prevent the scoop objects from rotating and collapsing.

Now I’m trying to replicate the same effect in 5.3 but it’s no use, when a few scoops are stacked the ice cream tower becomes too wobbly and hard to control, no matter how much I increase the inertia tensor scale or the angular damping.

How would you replicate the same effect in 5.3?

Attached is a link to a gif that shows the game mechanics.

Link to gif