When I switch to a dashboard tab containing chart nodes, the lines build up from left to right, taking some 500 ms to complete. 2 charts on the dashboard tab, each displaying a couple of 100 datapoints.
If I initialize the chart by sending an array containing the same data, lines are displayed immediately.
I played around with eCharts a year ago, and vaguely remember this could be turned on and off. Not a big issue anyway.
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