I am getting the exact same thing but with the Ortur rotary tool on the Laser Master 2 Pro. I just happened to see your post in the list and thought I would read it, even though it is not the same laser.
So this looks like a Lightburn setting or issue. I just setup my rotary tool and this was the first try. The X axis looks like it is moving the correct amount but the Y (rotary) movement is very elongated and on graphics it is skipping lines.
Any ideas from the Lightburn support team? Windows V 1.1.04.
To help clarify, I have uploaded 3 images. One that shows the banding when you laser an image, one that shows the letter “T” as it is elongated and then the same letter “T” on the screen in Lightburn. Note that the image, besides banding is also elongated.
I had watched it before and set everything. However, the last part says if the graphics don’t print right but the text does, then shut off rotary. That is not the exact issue I was having but I tried it anyway. It started working.
Appreciate the reminder to watch it a second time. Now I can try my first glass engrave.