Creating multiple Asset Bundles at the same time

Hi,

We have about 70 or 80 prefabs that need to be loaded as asset bundles (with more being added regularly). So as to streamline the process I want to automate the process by setting up a watch folder that will convert prefabs dropped into it into asset bundles.

I have it working at the moment but it is quite slow when doing all of them together:

Code (CSharp):

1. public static void MakeAssetBundle(string path, string bundleFolder, string bundleGuid)
2.     {
3.         // Add an asset to a bundle
4.         AssetImporter assetImporter = AssetImporter.GetAtPath(path);
5.         assetImporter.assetBundleName = bundleFolder + "/" + bundleGuid;
6.         assetImporter.SaveAndReimport();
7.     }

My thinking is that its likely

assetImporter.SaveAndReimport();

that is slowing the process down as its probably refreshing the assetdatabase for each one. I was hoping I could add all the bundles and then just refresh the database manually, once at the end.

Does anyone have any experience with this sort of thing?

Thanks