Question about frame drop when drawing with CZML

Currently, each point’s coordinate is taken from CZML obtained by propagating about 20,000 RSO’s TLE data.

With the coordinates, I displayed the RSO on the cesium viewer.

However, the frame rate was 2~4, which is horrible.

I tried various methods such as changing the propagate interval and interpolation method, but the frame rate did not improve.

When I draw only 3,000 RSOs in the same way, the frame increases to about 20, so it seems to be a problem because there are too many RSOs.

I would like to know how I can improve the frame rate while drawing 20,000 RSOs expressed in TLE data format.

Do I need to use a method other than drawing by CZML?

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