Thin vertical lines not engraving on fill mode

Hi folks,

Some details:
700x500 Chinese Laser 80W
Ruida 6442S
Lightburn last version

Everything use to work normal until today.
When I want to engrave a vector (fill) that has any thin vertical line it looks like is loosing power, or not triggering at all. Any horizontal lines are engraving well. I will attach a photo so you can make an idea.
Also, till yesterday the laser used to engrave after 10 min power, now nothing happens under 15.

I used to engrave my logo on the same size and settings and all the lines/ details were visible so I am not sure what could it be. Here I need your help.

Thank you.

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