The situation is as follows: Unity3d. When the object is dynamically loaded from the prefab, if the object is complex, lags occur on mobile devices. At the same time, lags arise, even if we divide the loading of a new part of the map into separate objects.
Maybe someone knows how to deal with this?
PS: the most annoying thing is that the objects are absolutely not high polygonal, simply because of the lack of multithreading in the unit, the same load occurs in the main thread (