Noticeable burn marks every shape when cutting

So I have the air assist on (dedicated 200W aquarium), but with every cut, the laser appears to be firing hot enough to initially make a spot like this. Usually, I cut all my 5-6mm at 80% power and no much higher and 600-650mm/min in Lightburn.

Is there any way to avoid this :thinking:

Same results/issue when cutting from Luban?

I haven’t bothered using that software it’s so awful lol.

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My settings for 5mm laminated MDF.

I use lasermaskingtape like this.

I was hoping I don’t have to mask anything; I mean it’s not the end of the world but it’s just an extra cleaning I have to do.