By default, this setting is enabled and the Queue processes all 'waiting to be processed' jobs as soon as possible. But, ...

By default, this setting is enabled and the Queue processes all 'waiting to be processed' jobs as soon as possible. But, if fast processing overwhelms the server and you need the Queue to slow down, you can turn 'Fast Polling' off. If the setting is off, the queue will do the following: Check if there are any free threads to process jobs, if so load all the free threads with the 'waiting to be processed' jobs, wait for the polling interval and repeat the process for any remaining 'waiting to be processed' jobs. If the setting is on, the queue does not wait for the polling interval when there are pending jobs. As jobs get processed, the pending jobs get processed immediately as threads are available.