Yeah I have found worse results if I don't leave it on the highest setting. I have gotten by with Pro and a little overage buffer so far. I have found it working pretty well for what I'm using it for but I have really only been using it a couple months now.
A few weeks ago I went from 'high' to 'max' effort and got decent results. Since 4.7 went live it has regressed to how it was before (with the same settings).
