yeah i know gfx don't make a game, but it helps for the final quality and the game atmosphere.
those demos are just in place to show the basics of the engine, and thats perfect.
they don't spent their time modelling or importing assets to test that in the engine.
imported fbx, 3ds, obj works like a charm by drag & drop.
i got no crash at the moment 4h now testing it exporting demos etc.
i know too much sfx looks like drug or hallucination thats one thing easy to remove/deactivate in the engine