At one time, the word granular was almost always reserved for something physical or technical, for example, as a measure of the resolution of a photographic emulsion, or of how fine the sugar.
But recently, I’ve noticed granular used in office settings to indicate a level of detail that the speaker would rather avoid. It’s generally said with a certain tinge of disdain as well, something like, “Well, we could talk about that some other time, but we don’t want to get into the granular level here.”