About a decade ago i was doing Conversions, Count Pages and Modify Epub jobs on dozens of 'books' a day with a tight deadline (06:30 out the door to a 100+ recipients).
I satisfied myself that I got more done by:
- setting Behaviour->Jobs Priority to Low;
- Miscellaneous->Max. simultaneous conversion/news download/plugin jobs: to 1
- and unchecking Miscellaneous->Limit the max. simultaneous jobs to the available CPU cores.
Instant gratification and productivity are not necessarily synonymous.
BR