The process PrinterMonApp slows the entire mac(MacBook Pro 2013, quad core i7, 16gig ram, 512 SSD) to a crawl.
Uninstall CWS6 and everything related to it, reboot, and its fine.
This should have been flagged in Q/A.
ps: Please bring back the option to click on the thumbnail of a processed job and see a window where we can zoom in the raster! Right now a tiny jpg is not that helpful.
Disapointed.