The polyline has a poor performance ,when I set artType to Cesium.ArcType.NONE

CesiumJS
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1. A concise explanation of the problem you’re experiencing.

I wan to draw a straight polyline , So I set artType to Cesium.ArcType.NONE . But the performance is bad.

2. A minimal code example. If you’ve found a bug, this helps us reproduce and repair it.

3. Context. Why do you need to do this? We might know a better way to accomplish your goal.

4. The Cesium version you’re using, your operating system and browser.

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if you move the camera,you will see the question