By default, QIE starts 10 processing threads that are used by the channels. Each channel can use up to 50% of the processing threads at any given time. This means that a high volume channel will only use up to 5 of the threads at any given time.
To configure QIE with additional processing threads, you can use the JVM System Property option below:
-Dqie.processorThreads=XX
where XX is the number of threads that you would like to have.
NOTE: You would only change this option if the hardware that you are running QIE on can support the additional simultaneous processing.