As you'd expect from our earlier discussion, if your report is based on a persisted Data View, the report should display much more quickly than if the Data View wasn't persisted. That's because it's not having to figure out which rows to display- that's already been calculated, so it'll just use that list. And if your report is based on a persisted Data View that also references other Data Views, it doesn't actually matter (at the report level) whether those nested Data Views are persisted or not. That's because the "top level" Data View that the report is using, is persisted. So, it's not actually having to go and look up those nested Data Views at all in order to generate the report. Neat, huh?