Sorry to get your hopes up, I was actually thinking about the rewind/ff speed being tied to the zoom level… my bad.
However, horizontal scroll speed with the mouse IS related to zoom level.
I’m looking at the Logitech Setup utility. I have the scroll wheel set to vertical scroll (obviously) with speed set to the third marker from the left, so fairly slow. The Acceleration is set to third marker from the right, so quite large acceleration.
Then for the horizontal scroll, I use the wheel tilt left/right, best setting seems to be second marker from the right (pretty fast) with no acceleration. This gives smooth scrolling, a slower setting just makes the scrolling jerky without slowing it down much.
In Nuendo, with a track height set at about 8mm (1080 display) one wheel click scrolls the arrange screen up or down by less than 1/2 a track height. But with the acceleration set high, I can scroll rapidly to the top or bottom of the page with one roll of the wheel.
MIDI notes in the key editor, one wheel click vertical scroll by about one note up or down, but again with acceleration I can scroll all the way up and down the range with one movement. The only thing I do notice which I can’t seem to change is scrolling number fields (e.g. note velocity) by hovering over the number and using the wheel. This is too slow for me, several turns of the wheel to go up from say 30 - 127.
If this doesn’t sound like your Logitech mouse behaviour, I wonder where the difference lies?