Thought this may be of interest. I have spent the last few months researching alternates to grlb-LPC for faster engraving. We have a “laser lathe” where we can achieve very high surface speeds since our motion is continuous and we do not decelerate/scan back and for throughout the job. My best candidate so far has been grbl-HAL running on a Teensy 4.1
grbl-LPC and smoothie clustering limited us to about 15,000 mm/m with out worse case test file. with grbl-HAL we are so far seeing a stable 50,000 mm/m and starting to get to the point where the laser pulsing is starting to be the limiting factor.
We are sending the gcode with the recommended generically named gcode sender beta8 but would love to get some ability for Lightburn to connect.