https://discussions.unity.com/t/assetbundle-loadassetasync-case-freezing-in-unity5-5-0p1/178790
AssetBundle.LoadAssetAsync case freezing in Unity5.5.0p1 - Questions & Answers - Unity Discussions
Dec 15, 2016 - When called AssetBundle.LoadAssetAsync many times in the same time will case editor freezing. (android is the same problem) Like this: AssetBundle ab = xxx;...