Laser print is having scratch marks while moving over white space

I got scratch marks as laser is not getting completely turned off while traveling over white spaces. Any setting there to adjust in the software?
I am using diode laser 500mW in Creality Ender3 machine.
Minimum power is 0%. Maximum power is 100%.
Speed is 10mm/s at 100%power.
Speed over whitespace is 100mm/s.

(Got same scratch marks at lower speed over whitespaces also eg. 10mm/s)

Read through this and see if it applies to your situation.

If not, can you detail out how your situation is different?

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