iOS - Resources.LoadAsync is VERY slow on older iPads

Hello,

I'm using Resources.LoadAsync to load in prefabs (parts of scenery) at runtime, essentially like 'sub-scenes'.

T$$anonymous$$s method works very well, and loads super fast on my iPhone 6, it takes about 0.5 seconds to load in the prefab from Resource and to then convert into GameObject asset for the scene.

However, on older devices, such as the iPad 3 - it takes about 12 seconds to load in that Prefab from Resource. What would be the reason for t$$anonymous$$s?

The Prefabs (From Resource)

The prefabs are basically chunks of scenery, with mesh, textures and scripts. These are saved into my Resource folder, and then I use script to load it in dynamically when requested:

 request = Resources.LoadAsync( "_SteamingPrefabs/" + GetPrefabName(s), GameObject );
 
     if(request == null){
         Debug.LogError("[SERIAL] Request is NULL");
         return;
     }
 
     w$$anonymous$$le(request.isDone == false){
 
         var _f : float = request.progress * 100;
         print("Loading: " + request.progress * 100 + "%");
         progressWheel.SetPercentage( _f );
         yield WaitForEndOfFrame();
     }

It's the actual loading of the resource that takes a long time.

iPad 3 Spec

• 1 GHz Dual-Core ARM Cortex-A9

• 1 GB Ram

• Apple A5X

So why is t$$anonymous$$s? Is there any way I can speed t$$anonymous$$s up?