Based on my experience, I do believe there is an “optimal” intensity for the recovery settings. While this optimal intensity is not low, it is not necessarily has high as you can handle. I’ve had variable results with different individuals - which I assume correlates with muscle fiber type.
In some cases, I have dialed down the intensity slightly and experienced better results. I would assume it is similar to a massage session, where too hard and deep a massage can have less optimal results. There is likely a point of diminishing returns. As with training, it is your job to determine “how much, how long, how frequently, etc.” based on your experience with various individuals and their tolerances.