Lines on the finished work

When I am engraving on any material using an image, the laser is leaving very evenly spaced line that are not quite as dark as the other work. Not sure what is going on. I have increased the lines per inch and it seems to have improved greatly but the time to complete the job went through the roof. Is there another way or setting I can use so I can go back to more reasonabe settings and time?

We can’t see what you see, it would help us help you if you post a photo or two.

Include a screenshot of the layer settings.



I will get the info and post it later this AM