All sublevels being loading at map load, confusing cesium

Cesium for Unreal
1

In our cesium-enabled map, we have about 15 sublevels. When I load the map, it appears that all sublevels are being loaded automatically. This is interfering with our attempts to activate a particular cesium sublevel so we can spawn our airplane (because cesium appears to get confused about the streaming state of its sublevels in this case, probably because the engine itself is loading the sublevels). Is this a known issue? Any way to prevent that from happening?

We are using Cesium 2.5.0 on enigne version 5.4.

Additionally, I saw in this old thread from 2022 that cesium sublevels are not really supported? Is that information still correct? Sublevels in UE5 broken

2

I’m not quite sure what would cause the Engine to preload all the sublevels, so probably the first step is to work out why that is happening. Can you reproduce the problem in the Cesium for Unreal Samples project?

Also, is this in the Editor? In Play-in-Editor? In a shipping game?

Additionally, I saw in this old thread from 2022 that cesium sublevels are not really supported? Is that information still correct? Sublevels in UE5 broken

No, the sublevel system has since been rewritten for UE5. They should work well now.