THx @hippocoder for the explanation. Yes, my default Volume settings are like your screenshot. In the hierarchy, the "Reflection Probe Main" game object is making the reflections. Since this probe is in a general fix position, the reflection will never much with the sphere game object. So I need to take out the sun from the reflection as you mention. And at that point, I get lost looking for cubemaps or skybox: I do not understand where this skybox is rendered or where is in the Project so I assume is a default one (so is not visible in the project). I'm also searching for this baking profile where the sun rendering can be removed. Do I need to make a new custom reflection?