This method is especially helpful for both smaller scale sims such as window destruction, and large scale simulations such as a building collapsing and exploding. This is an amazingly helpful feature that works well for the most part.
Some tips when doing this:
Check triangulate on the export settings
Bake all rigid body actions to key frames before exporting
For extra realism, export your unreal scene and import it to blender to create an environment so that your simulation will match what you want in game (bounce off walls, etc.
If you want something more resource friendly then chaos physics, I’d use this awesome blender tool. I believe this is how old games like call of duty mw-mw3 has spectacular building collapse scenes even on an Xbox 360. Storing simulations as animations is a helpful tool .
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