Laser Cutting

I have a drawing with small details like hairs.
I try to etch it on cork.
I use LaserGRBL, with speed 2000mm/min, and 0.75W of power.

If I use the "Line To Line" option, the hairs are too small, and individual lines will not be drawn.

If I use the "Vectorize" option :

• without "Adaptive quality", the small details are removed.
• with "Adaptative quality", the small details are finaly there ! But ... the laser try to draw the edges of each hair, burning each hair twice. The result is a big burnt blob instead of individual fine lines.

Do you know how to solve this issue ?
Is there a tool to approximate fine details with unique strokes ? Is this possible in Inkscape for example ?

Thanks a lot.