High Crash Rate on iOS in PreloadManager

0 myth find_position (functional:659)
1 myth find (densehashtable.h:270)
2 myth GetPreloadData (densehashtable.h:270)
3 myth CollectPreloadData (AssetBundleManager.cpp:184)
4 myth CollectPreloadDataRecursively (AssetBundleManager.cpp:215)
5 myth CollectPreloadDataDependencies (densehashtable.h:413)
6 myth CollectFullPreloadDataDependencies (AssetBundleLoadAssetOperation.cpp:133)
7 myth Perform (AssetBundleLoadAssetOperation.cpp:144)
8 myth ProcessSingleOperation (PreloadManager.cpp:302)
9...

High Crash Rate on iOS in PreloadManager