Based on actual user/usability testing, software for monitoring what's going on in a coffee roaster should be presenting updated data somewhere in the range of 2 to 10 times per second, with 4-5 updates per second being an especially good sweet spot for maximizing operator joy. This is something that computers from 3 decades ago would not have struggled with.
Slower or faster and operator anxiety shoots way up and with that comes a reduction in control accuracy and an increase in mistakes resulting in failure to hit product spec. Faster incoming data rates can still be useful because you can apply well known statistical methods and get cleaner data at human friendly rates ($1 microcontrollers have enough compute these days to do that) but most of what's out there just doesn't really bother.
