Loading larger mesh from asset bundle takes minutes

Unity Engine
,
1

Hi,

I am trying to load a larger mesh (around 65K) with around 350 blend shapes from an asset bundle.
This takes multiple minutes, and I don’t understand why this is the case. What’s even more strange, if I measure the time around the load function, the log tells me it takes less then 2 seconds. Here is the code for loading the asset and measuring the time:

        float time = Time.realtimeSinceStartup;
        var myLoadedAssetBundle = AssetBundle.LoadFromFile(Path.Combine(Application.streamingAssetsPath, "assets" , hairProperties.prefabName));
        if (myLoadedAssetBundle == null)
        {
            Debug.LogError("Failed to load AssetBundle!");
            return null;
        }

        GameObject prefab = myLoadedAssetBundle.LoadAsset<GameObject>(hairProperties.prefabName);
       

        myLoadedAssetBundle.Unload(false);
        Debug.Log("Time for loading hair asset: " + (Time.realtimeSinceStartup - time));
2

As a small update: The issue only happens in Editor, so probably some sort of Unity bug I guess.