Sometimes it may seem that a simulation is running in slowmotion but quite often this is because you don't get a correct sense of scale.
It's quite common that some users create a box with a dimensions of 1x1x1 units and a mass about 1-10 and then expect it to drop and tumble around like a dice(If gravity is set to 9.8) but a solid 1-meter block with a weight 10 kg won't tumble around like a dice.
It's quite common that some users create a box with a dimensions of 1x1x1 units and a mass about 1-10 and then expect it to drop and tumble around like a dice(If gravity is set to 9.8) but a solid 1-meter block with a weight 10 kg won't tumble around like a dice.