2mm plywood Engrave feed & power

Hello,

Hi, I have a problem. I bought 2mm plywood (light) to try to engrave. However, I can’t find good power and feed. When you let it go, it either burns a lot or it doesn’t burn. I tried to change the range between max and min power , but to no avail. Also various strategies (mostly grayscale, jarvis & stucki). Please help if anyone has any idea what I can do?
The Machine is ORTUR Laser Master 2 - 20W.