Hi, I managed to load in my 3D Tileset, however when I try to reduce the tiles generated, changing any of the loading settings didnt do anything, it still generates the same amount of tiles. May I know what is going on?
Hi @Wong,
I just want to confirm my understanding. By “reduce the tiles generated”, it sounds like you want to reduce the number of tiles that load in the level – is that correct?
If so, you’ll probably want to increase the Maximum Screen Space Error, which controls the threshold for level-of-detail refinement. When this number is higher, the threshold is higher, so tiles will more likely load in lower levels of detail.
In general, this should prompt less tiles to load, but there is also a dependency on the way that the 3D Tiles were generated. For example, the geometricError of tiles comes into play here. So it may depend on where you got the 3D Tiles from. 
Let us know if that helps!
Hi @janine
Thank you for the quick reply. I was trying to only load tiles from the surrounding, but it seems to load the far away tiles, and adjusting the settings in Tile Loading doesnt seems to change anything. I also tried increasing the Maximum Screen Space Error, but nothing changed. Screen capture - 6b37ba6e8b7ea1c36de7909db607445e - Gyazo
The 3D tiles are created using cityGML exported using the method explained here: Local/Imported Map Data for Unity - #9 by Wong
Could it be the way it is exported?
@Wong you should try increasing the Maximum Screen Space Error more. The default is 16.0. You should try 32.0 or maybe even 64.0. Keep doubling if it still makes no difference.
If that still has no impact, it indicates that the tileset itself doesn’t have meaningful levels-of-detail. In which case, it will have to be fixed at the tiler level, not in Cesium for Unity.
Hi @Kevin_Ring Thank you for the reply. Uhm, I am not trying to reduce the LOD. What I mean is the tiles generated are very far away from my camera, is there a way to reduce according to the camera FOV range? Or is this due to the limitation of my tiles?
Also I have another question, not sure if I should raise a new thread:
3DTILES_batch_table_hierarchy with a “parentCounts” property is not currently supported. All instances must have at most one parent.
Will this be supported anytime soon?
Cesium3DTileset will automatically reduce detail in the distance. However, it can only do so effectively in a well-constructed tileset. Adjusting the Max SSE is a way to test if the tileset is well-constructed by seeing if it responds correctly to the request to lower detail.
Also I have another question, not sure if I should raise a new thread:
Yep, please start new threads for new questions!
3DTILES_batch_table_hierarchy with a “parentCounts” property is not currently supported. All instances must have at most one parent.
Will this be supported anytime soon?
No, probably not, sorry.