Thank you, that helps. So you recommend importing each element singularly? Cos in Blender you can actually merge a number of meshes into one object and export it as one. But then I am guessing that only one bounding volume for the entire thing would be created when you set the collision and build it?...
For example, the four walls of a room, do you recommend to place each wall singularly or would the collision work fine if you import the four walls as one object?
Thank you for your help!