When starting ue, it need to wait for a certain period of time instead of having it directly

I want to know if the cesium for unreal corresponding to the ue4.26 version can be used directly like importing uasset, without waiting for the loading time.Thanks for reply!

No, 3D Tiles is typically used with datasets that are far too large to load all at once, or even to store on a single system. Also, UE 4.26 is no longer supported. Current versions of Cesium for Unreal require UE 5.1+.