I am using the buttons "Zoom in/out in the view" and "Move the view" often, but encounter an error/bug.
The scale/step size on which I am moving/zoom changes without any conscious choice. I am moving around in the scene and all of a sudden, the step size changes to minimal such that I am hardly moving at all.
- Where do I change the step size?
- Why does it change automatically?
This also affects the Dolly mode discussed here.
So far, I have to restart Blender all the time.

