I am going to test out some of this… I have noticed some re-occurring lines in my engraves where it seems that the line is skipped… and it changes in interval when selecting dot size
http://diylaser.blogspot.com/2011/09/laser-engraving-and-dpi-scan-gap.html?m=1
I won’t be exactly coping their charts… but adjusting dot size at intervals that will be a factor of what they suggest…
It will be interesting to see your results.