In continue to this topic:
I changed engraver motherboard (it is Smoothieware compatible again) and updated LightBurn to latest version. So now I can go back to engraving!
And the problem is still here, it just have a fancy window now:
It destroyed my new cutting board because when you have commercial software you should not expect that it “may not work” today:
So again, the problem:
LighBurn says that it “lose connection” to the machine on high speeds (during engraving).
Machine remains responsible, it is not freezing or rebooting.
USB connection remains active, no “device disconnected” or any other problem.
THE SAME Gcode from LightBurn works perfect in LaserGRBL.
So as I said a few month ago, something wrong with LB transfer protocol.
Does anyone have any ideas how to start the engraving without LightBurn? Maybe there is way to send gcode automatically on gcode file save through LaserGRBL? Scripts or command line? Or is there other any other software with the same capabilities, like basic 2d tools and image vectorization?