I need to assume 1 BU = 1 cm, for use with Unreal Engine. That's because I can't use the FBX exporter's "Scale" value - it's not recognized properly in Unreal.
In Scene's settings, I chose Metric and changed the unit scale to 0.01. Everything is correct expect for simulations :/ Object are falling slooowly...
I can't set gravity to -981.0 - Blender clamps all values above 200.0. So, what else can I do?