WWW.LoadFromCacheOrDownload needs a version parameter, but BuildPipeline.BuildStreamedSceneAssetBundle and BuildPipeline.BuildAssetBundle do not have any parameter to specify version.
What does version refer to?
Answered your own question
When you LoadFromCacheOrDownload it assigns that version number do the Bundle. Next time you try and DL, if the version matches, it’ll just grab it from cache.
Thx!