Hi Liam,
Max utilization is the highest value used for that parameter, meaning the maximum number of process used.
But maybe we are not searching the in the right direction...
So this happens on a system with many instances, and the time driven jobs did only succeed to start on the central DB instance ?
If there are supposed to run on one of the Windows AS instances they get stuck.
Have a look on note 544881 - Composite SAP note: Time-driven jobs do not run
Regards