Lightburn vs LaserGRBL

I’m making jigsaw puzzles using a Atomstack A5 Pro. When using LaserGRBL I can cut my material at 100% 500 mm/min 4 passes. When using the same settings in Lightburn it is nowhere near cut. Is there some other setting I’m missing? The only difference I see is that LaserGRBL passes the entire drawing 4 times where Lightburn passes each line 4 times.