This is why you are not getting the results you expect. Make that 1000. $30=1000
Here is a post showing the correct settings for the Ortur.
We have a document,
on the topic worth review: Common GRBL/GCode Setups - LightBurn Software Documentation
For the camera issues you describe, any movement at all can cause the need to check and adjust to get things correct. How do you have the camera mounted? Redirecting...