Content Download System (Unity3d)

This is an AR app that requires users to unlock AR content. Currently we have a system where the user will unlock something and it will load a separate scene to be able to view it in AR. Currently our app takes up too much memory to download quickly. Users mostly only need to download part of the assets that are in the app. We need to improve on our already-existing system that allows us to download image targets, video and 2d content, but not assetbundles/3d content/audio/particles. What we want to do now is have the system download that content and instantiate it in an empty scene, rather than have the content be pre-loaded into the app. We have GUI already existing. You have to add onto our existing code to add assetbundle support and make sure the content works as though it were preloaded into the app. This uses Unity 3d and QCAR knowledge is preferred. Please contact me for more details.