How can I improve label printing speed?

In the application preferences there is a popup selector for label printing speed. The default value is "2" which works well with most thermal printers, however you can try to use the "4" setting for increased printing speed. If the printer has issues at these faster speeds, revert back to the default value. When increasing speed, you may need to increase the Darkness value to insure scanability. (The default Darkness setting is "10")

You may want to consider a higher performance printer. Printers like the Zebra ZP-450 provide significantly faster printing versus older LP2844 style printers.