Each material has a certain amount of reflection, and this is a setting that we can adjust in almost every material that we can find in Lumion. Taking into account that Lumion is a real-time application, it is natural that in some cases, the reflections don't meet our requirements in terms of accuracy. Lumion has an effect that we can apply to surfaces in our 3D model to improve these reflections.
Before you start, you need to understand that first of all, the less the number of polygons you have on the surface, the better. So, if you have a building with a huge facade, instead of using multiple surfaces, if possible, use only one surface for the entire facade. The same applies to a floor or other surface you want to add these effects to.
The second point is that you need to do the UV mapping for the surface, which will be really easy and simple if you have a surface without many polygons. This second point is not mandatory, but if you do it, you can take...