The GCODE from your v-carve file violates the best practice for Grbl 1.1 Laser Gcode (with Laser Mode $32) NB NB NB Have a read through gnea/grbl and then find a Grbl 1.1 compatible Post Laser Off moves should just be G0 The output below is Grbl 0.9 style with the laser on/off commands repeated all the time with a G1 used as the off move, its just wrong You do have $32=1 enabled right? (else machine will pause for each M3/4/5 command too) Also Yes, and refer my earlier advice around that: and even earlier This menu exists to "speed up" control by disabling eye-candy that you would prefer to live without. You can disable or enable features however you wish Regardless, different computers, different workflow preferences. You can use whatever Host you prefer, not forced to use CONTROL either. See docs:software:overview [OpenBuilds Documentation] - if Lightburn is your favourite (; go for it! Its the cool thing about an open source setup, no vendor lock-in Also, what is the specs of your computer?