[AndrewOMartin]

A message to my previous self: Before you write a line of code, decide what the interactions are going to be and then use an engine which can handle them and no more. If you're writing code that handles when two stacked physics enabled boxes have their supporting structure removed from them at near t speed of light, but don't require such interactions to make your game fun, then you're stuck in a tar pit from which you'll never escape.