My laser is not engraving/cutting accurately

Help. My Algolaser 10W is not engraving/cutting accurately. Anyone experienced this? Can somebody help? Thanks. Im using lightburn in Mac by the way.

These are supposed to be round but as you can see there are perfect rounds but more are not. Also the square cut is not accurate and also there ate letters/words that are becoming squished.

It appears you have a mechanical issue. Some being round is just plain blind dumb luck. Here is some reading material for you:

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