Scrolling with a touchpad on Windows is much laggier than otherwise

To reproduce, try creating a flickable containing a large scene, for example 8000 small rectangles. (you don't need this many to see a noticeable difference, however), and try scrolling using a touchpad

As you can see in the video, in the exact same scene, scrolling with my laptop's touchscreen works perfectly smoothly, but scrolling with a touchpad causes huge amounts of lag and erratic/jerky scrolling

When I sent a demo of my app to a friend (without the dots at the end, i added that in to make the bug more visible for the video), they were very annoyed by this bug too, they noticed that scrolling with their touchpad was very laggy, but with their touchscreen it was perfectly fine.