Chiming in a bit after the fact, but great question.
I actually built and used to maintain my own Power BI Chrome extension for this sort of thing, I think it was the best one at the time, but even then it was unreliable and hacky at best. Mine was a Javascript autoclicker, but it broke all the time whenever the Power BI Service website would change it's HTML code. You'll probably run into session timeout/login issues, as well - lots of people do. They also are extremely limited in functionality and dont' really "save" slideshow plans for you. Regarding a refresh, there are some browser extensions to do this, but you'll likely want your Power BI report or dashboard in fullscreen mode (which Revolver will not do), and you may want some sort of tab rotation/slideshow mode, too (also not suppored by Revolver).
I really don't recommend these Chrome extensions to anyone anymore.
So I decided to build a custom app for Power BI that's better, it's called Displagent. It has a lot of nice features you can read about on its docsite, but among the various things it does, one is that autorefreshes are taken care of for you.
You can build Report Slideshows (extremely popular), Dashboards, Slideshows, or Compound Slideshows (mix & match any number of the first two) and set refresh intervals in the app. What's also nice is that it uses an Azure App Registration and Power BI service account, and it stores and encrypts your credentials on your own machine (very secure), so you never run into manual login/session timeout issues. Autolaunch to a slideshow on machine startup/reboot is also supported.
There's lots of other features, too, so check it out or message me if interested. Hope that helps somewhat!
