The jobs in the printing queue can stuck and not be processed in the ripping process. That even can affect the machine stuck and the production process stops.
The causing issue can be that the CPU settings of the Print Server are too high, e.g. 15-13, 4-6, etc. (attached customer screenshots and FD case). This will cause every print job process to be split into those CPU processes and that takes more time to process a single job.
The recommended CPU settings are 4-2.