Zigzag pattern in my engraving on Atomstack x20 pro

[Morne]

I’m a newbie with lasercutting and trying to dial in my engraving settings.

When I try to engrave something it leaves this zigzag pattern on it.
Does someone have an idea if this is belts or settings related? (the white is from a paint marker)

[Morne]

Additionally there is this one line going through the entire engraving as well. Is this due to something else?

[gilaraujo (Gil Araújo)]

Can you post your LBRN file so we can verify or a screenshot of design + Settings