Comment 1 for bug 1556795

Hmm, maybe the problem is just QtMir speeding up/amplifying mouse wheel events a bit too much:

src/platforms/mirserver/qteventfeeder.cpp:

            const QPoint angleDelta = QPoint(hDelta * 15, vDelta * 15);
            mQtWindowSystem->handleWheelEvent(timestamp.count(), angleDelta, modifiers);

which then makes for a high scrolling velocity that takes a while to finish.