@dkefeli,

minimum property sets the minimum of the axis i.e. values smaller than the minimum will be clipped and can’t be panned. viewportMinimum allows you to set the minimum of the viewport (the visible range of the axis)and zoom into a region programmatically. In both the instances, only a certain region of the chart is made visible and rendered. And hence there shouldn’t be performance impact.

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Priyanka M S
Team CanvasJS