Ortur laser master not working properly

hello, I have a problem with this laser master. both with laserGRBL and Lightburn, both Mac and windows.

when I click frame it moves perfectly, but when I click “Start” it reaches the correct position, switches on the laser, starts shaking and making some noises and then homing. I took a video for better understanding. what can I do? thanks

here is the video.

it looks like it forgets how to move the X axis once it’s engraving…because it works just fine when Framing the object.

but when I select super fast speeds like 60000 mm/s it works just fine with the movements…what can it be?

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