100pah opened a new issue #13680:
URL: https://github.com/apache/incubator-echarts/issues/13680
### Version
5.0.0
### Steps to reproduce
Tooltip performs kind of "lag" when mouse is moving on "both-value axis"
cartesian.
There might be some performance issue. Need further checking.
For example:
```js
var data = [];
for (var i = 0; i < 1000; i ) {
data.push([i, Math.random()]);
}
var option = {
xAxis: {},
yAxis: {},
tooltip: {
trigger: 'axis'
},
series: {
type: 'line',
showSymbol: false,
data: data
}
};
```
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