It doesn’t matter how often I try to scale the 3D objects to the desired height - every time I reopen my project, the dimensions are no longer correct. This problem already occurred in earlier versions of Twinmotion.
Irrespective of this, I had to open an older version of Twinmotion last time in order to make use of the Urban tool at all. I’m not sure whether it’s the API to Open Street Maps or the fault with Twinmotion, but in most cases (at least for me) the maps don’t load at all.