You’re asking it to go too fast then. $32=1 is ‘Variable Power’ mode which means the laser adjusts the power output from 0 at a dead stop to whatever power you request when it gets to the speed you request.
CNC3018’s are severely speed limited because of the screw-drives - they need to spin the screws a lot to move even a little, so the maximum speed is usually about 1000 to 2000 mm/minute. If you asked the machine to go 6000 mm/minute, for example, and it was restricted in the firmware to 1000, you’d get 1/6th of the power output you asked for because the machine never gets close to the speed you requested.