Can't cut through 1/8" hardboard despite slow speed and high power

I have a ~ 40 watt “china blue” generic laser with a Ruida controller and have been using RDWorks up until now. Really want to see if LightBurn can work better for us.
Can engrave and cut through the hardboard with ease using RDWorks. 10mm/sec and 60% power does it for me. However, no matter what I set the LightBurn parameters to, I can’t get it to cut through. I even try multiple passes, up to 3 and it still won’t do it for me.

Am probably doing something wrong and would appreciate some guidance,

Thanks in advance

Thank you very much. I just commonly do that with RDWorks but didn’t think about it for LightBurn.

Works beautifully!!

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