Grasshopper zoom is slow because of nummeric % field update

The UI redraw of the zoom factor triggered by a trackpad (or mouse) is slowing down the framerate.
The update frequency of the % field is linked to the trackpad events - which is bad.
Please fix it, thanks!

edit: catalina 10.15.6, latest build 11. August

edit2: and you should really remove the acceleration from the wheel input - mouse scroll is hardly useable even with the canvas toolbar off