Why is the chart updating slowly when changing the min max value of the axis?

Question

QML

Hello.
I use Qml 5.12
. I display a ChartView, one polyline LineSeries. Data from QAbstractTableModel via VXYModelMapper.
In general, almost everything is as in the examples.
For axes, ValueAxis is used with fixed min and max:

ValueAxis {
        id: xAxis
        min: 0
        max: 10
}

The problem is that when changing min max (for example, by 10, 20), the main thread freezes very significantly.
There are about 200 data in the model at a time.

If I change the X values ​​in the model itself, then the graph itself is redrawn quickly.

Tell me, please, what am I doing wrong and how then to "scroll" the chart correctly?