Ugh, you seem to be right 
If I stare the cans intensively really close by, I can see that they seem to drift very slowly… And sometimes they even twitch like the cylinder did in other thread: https://playground.babylonjs.com/#BEFOO#1434
What could be done to fix this? It is a really nasty problem since the physics simulations should hold up a long time in a game environment and be trusted that they do not fall through ground because of twitching… And generally to maintain good performance 
Should I open a ticket in github or make a separate thread in bugs section?