Comment 26 for bug 1786515

Unfortunately, it depends on the GDK backend (https://developer.gnome.org/gdk3/stable/gdk3-Event-Structures.html). Some do, some don't. All trackpads I've used generate these events. Not all mice I've used do. Some do and scrolling is normal in pcbnew. Some don't and it's slower.

We could set the multiple and then match duplicate timestamps as John suggested above. That would filter the smooth events. How bad is the effect? Is it worth a potentially jumpy implementation (if the timestamps don't arrive sequentially then we would miss the duplicates)?