there was already an request for that:
duet3-with-sbc-ethernet-support/32542
but since the high speed raster engraving with RRF starts to work as you can see in this thread:
This would be something that Lightburn should have either like the plugins for Cura (github.com Kriechi Cura-DuetRRFPlugin) and even Prusa Slicer can do that.