300 Bps is demon speed! I remember using an acoustic coupler to access the early internet at 300 BAUD (i.e. 300 bps), or about 30 char/sec.
Later on, I also remember downloading Linux kernel tarballs, hot off the press, via FTP using 9600 bps modem (if I recall correctly - slow as crap), which I'd kick off before going to bed and hope for the best in the morning. Sometimes I'd make a script to download a few different files at once.
On the theme of slow computing in general, I remember doing embedded software builds on a PDP 11 (Xenix) that would take an hour or so to complete - so you'd go and practice your juggling or somesuch waiting for it to complete.
Still, the big thrill in mid-late 70's had been the switch from batch punched card deck submissions to a mainframe (an hour later comeback to collect the syntax error, or core dump printout) to being ONLINE (woo hoo!) - sitting in front of a terminal and actually interacting with a computer in real time!