Not much has change between 9.2 and 9.3 for deployments processing. From what I see patching times for my systems in my lab have gone done. Make sure Windows Update isn't set to check for updates, this will cause deployment processing to take house instead of minutes. Plus, some of the newer patches are hundreds of MB up to 1GB in size these patches take a considerable amount of time to process, even when installing by hand. It may be a good idea to verify the patches being installed. Lastly, logs from the target may clue support in on which patches are taking a long time to install on your systems.