Laser Malfunction

Snapmaker 2.0
1

Hello,
Since Today, I have had some issues with my 10W Laser.
Everything works perfectly when I want to laser one object.
But when I want to laser multiple objects during one run, I have some issues.
The first issues:
image
As you can see in the image on the bottom left corners, I have a keychain that I want to laser.
and now the laser is burning the mall before it starts with the keychain.
I 3D printed a mall for my keychains so that the laser process would be faster.
I create the gcode with Luban and I am using the camera to align everything.
But for some reason, when the laser starts he starts 10mm below the point in luban. I don’t know why.
My second problem.
Again, with the camera everything is perfectly aligned in luban with my objects.
But when I start the laser process, the first object is perfect, but the second object is not aligned

I have to laser more than 100 keychains, so doing them individually is not an option.
I hope someone can help me with this.
I have the latest firmware installed, and I have the newest software installed.
Yes, I am using luban and not another tool. Unless I can use the camera with the other tools, I want to keep using Luban.
Or, if you can help me with my keychains and how I can align them with other software, I am up for some recommendations. for the record I have the mall created in fusion 360, and I hope I can keep using the camera because the keychains are not all the same.

2

This is the picure for the second issue
image
As you can see the first object is lasered correctly, but with the second the laser is off for a few millimeters. I don’t have the image for my design in Luban, but both vectors are perfectly aligned on the objects using the camera.

3

I found that huge surface laser can mean the position becomes less precise after a while, which is especially problematic when you need more than one pass. If you create separate tool-paths for each sub-object, it is more precise. E.g. if you want to laser the same object six times next to each other, it’s more precise if instead of creating one SVG with six copies of the object, duplicate the object in Luban instead and create one complete tool-path for each copy.