From the Digital Equipment Corporation, VMS Guide to Performance Tuning, from before 40% of the HN readership were born: 5.3.4.3 Lower the Baud Rate if Termi

From the Digital Equipment Corporation, VMS Guide to Performance Tuning, from before 40% of the HN readership were born: 5.3.4.3 Lower the Baud Rate if Terminals Smooth Scroll If many of the applications at your site write characters to terminals in the smooth scrolling mode … you might consider reducing the baud rate [from 9600 to 4800] …  the decrease in the baud rate would be barely perceptible to the users. VT100 transitions come to the rescue! (Smooth scrolling was at 6 lines per second. Glassy smooth, especially if you kept the line saturated to the flow control limits. But as a consequence it couldn't accept more than about 4000bps of data on 80 character lines. That particular hint never made much sense to me because it is about saving interrupts and a screen of data took the same number of interrupts at 4800 or 9600. I think it was more about slowing down the users without them noticing to avoid upgrading the computing resources.)