Anyone having issues cutting 3mm plywood with 20w/5w laser

I am using the fox alien 20watt laser on my masuter and even at 100% power running at 600mm/m still does not cut thru after 4 rounds. I am upgrading to a 40watt but wondering if anyone else having this issue or is it operator error. (most likely)

Slow it down!

Like he said, slow it down. 80mm/m at 85% 3 passes.

Like they said. Slow it down. Also, I came across a problem with cutting once. Then I noticed the laser was pulsing. I had to go into the settings and for some reason, (I must have did it), perforation mode and the tabs/bridges was enabled. Once I disabled them, it cut like a charm.