Is there any way to smoothly drive tens of thousands of objects at the same time in cesium for unity

I have a large number of objects that need to be driven in real time, and I see that czml can render large amounts of data in js, so is there any way to support large amounts of object driven display in unity

Cesium for Unity does not yet support CZML, or any other similar format. However, you do have all the normal Unity tools are your disposal. For example, if you want to display lots of models at different locations, than instancing can help.