Yes, with waiting time there seem to be a zone of frustration. Waiting a short time isn't a problem. Waiting a long time, i.e., 8 minutes gives me ample time to

Yes, with waiting time there seem to be a zone of frustration. Waiting a short time isn't a problem. Waiting a long time, i.e., 8 minutes gives me ample time to do something else,like, getting a coffee. However, a waiting time in between is frustrating as I am waiting wasting my time, and I know it.