Feeling like you are a character living in the setting.
Okay...but that's something we have already addressed. There are many ways to achieve that feeling. Doing a lot of conflict-neutral, low-stakes/no-stakes situations is far from the only way to do that. I should think there would be something more specific than the feeling the action generates? That is, "progress" (in any campaign, regardless of how sandbox-y or railroad-y it is) generally means that actions are being taken which achieve demonstrable and relevant
results for the players. They can be bad results, e.g. because the players' plan was bad, or because the dice said so, or because they failed to account for all obstacles, or whatever else, but events occurred. Whether or not one
likes events that produce progress of some kind, that is a feature of these events.
What is the feature you prize in these "conflict-neutral" events that contributes to this feeling? Because I know that not
all such events are going to get attention. As noted, I don't expect anyone here to demand descriptions of how one eats and drinks or how one goes to the bathroom. Such things are, even for you, below the level of notice, but I don't understand what it
is about the events above your threshold which contributes to this "ah, this is a world I am in" feeling. Conversely, I
can point to what is in so-called "highlight" events, medium- to high-stakes events, conflict-embracing events that contributes to the feeling of good pacing; namely, "progress", actions which demonstrably result in the fictional state moving to a new state, and generally doing so in a timely and consistent manner.
If it is possible to say, what is in events which leave the fiction entirely unchanged, that contributes to the feeling like you are a character living in the setting? I can think of some ideas, but I don't think it's productive for me to speculate on them.