> Users are usually fine seeing many changes on the screen quickly because it gives the impression that stuff is happening on the background
This gave me a chuckle because I personally hate things like watching the browser jump through 50+ redirects when logging into a website.
My bad, I mean the interstitial. Like it should stay for at least a second to not make it jarring. People believe computers need to think so you can't make things too fast either. Not the interstitial and not the app either, to the point you sometimes have to deliberately slow down the app, add latency to make people trust it because it "gives the computer time to think"