Gemini Selects Poor Cut

Hi all.
I purchased some Gemini Duets from JDS do make a few dozen office door plaques. Using my 70 watt boss CO2 laser I have gotten beautiful results on the engrave portion. Unfortunately when I cut the piece it is jagged and unsightly. For the cut I am using 60% power and speed is 20 mm/sec
I’ve tweaked the settings up and down to no avail. Any help would be greatly appreciated.