For anyone who have played around these values, including the mod maker, what are the most realistic values and ratios, that approx. works in the most realistic way in most of situations such as, from a small post falling, to a crane/ship falling from the sky into a building to cars and trucks crashing into buildings at various speeds.
Which values have worked most realistically, if tested?
(note that I believe that there may be an issue with the fact that that every creation is built with different materials, so there may be some inconcistencies? I dunno I may be wrong)

Also a small bug, sometimes crashing cars into buildings or other cars, even under random and various values, it causes them to "explode" or suddenly break in a big radius or something.
Any ideas on why?