Best parameters for 15W Laser engraver/cutting machine

Hello everyone,

I just get a 15W DIY laser engraver from aliexpress. From 3 days I am trying to cut a piece of plywood on 4 mm and still dont works (only over 50 passes). I am guessing that I dont have the right parameters for this.
Is anyone which have this type of machine to help me with the parameters and with the software?

Mention is that I receive the Engraver Master software with this machine, but dont know how to make it works.

Any information is very helpful for me.

Attached is the image with machine and with software.

You should ask your question in a laser cutting forum, you won’t get much help here. This is an Xcarve community…