Large CZML file performance issue

Hi there,

I have a single large .czml file that is about 3XX MB, which is causing low performance, and I am only getting 1 to 6 FPS when I run it. Does anyone have a solution? I have found that many developers are also facing the same problem but do not seem to have a good way to solve it.
Cesium CZML performance issues

Following is my .czml file in sandcastle
Thank you!