I’m using Lightburn (Gcode) on an Atomstack A24 Pro Laser installed on a Dell laptop (windows 10). When either cutting or engraving the laser starts out operating the way it is supposed to, then it starts to chatter and goes out of control. I just finished engraving for about 2 hours and it worked fine. The next project I started is when the problem occurred.
Probably mechanical, like loose plug or broken wiring to one of the stepper motors.