Ortur laser master 2 cutting paper and card

Just got my laser and I’ve spent a day just trying to cut through white card. Ive seen some great videos of people cutting on card and paper with good detail yet it remains a secret on the settings they used. I can’t seem to get that detail that they achieved. I’ve tried so many test settings, I yo-yo between burning and not making it through. I can’t find any information on what settings I should be trying for paper and card of different colours.
Can anyone give me a vague idea of the speed and power and anything else I should be using or trying.

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