There are 18 specific steps of zoom in MRA Planner.
I suspect that your Logitech mouse is set too sensitive.
You might want to actually lower the sensitivity of the mouse wheel when working with MRA Planner.
I strongly support this suggestion! I tend to participate in several ironbutt rides and certain POIs can be hundreds or thousands of miles away. It would be great to be able to upload my POI list, zoom out and still be able to see the POIs in order to start creating my routes. For us rally, long distance riders, this would be extremely useful. A "game changer" in all honesty! Keep up the good work MRA!👍