The accelerations slow the speed. each transition between light and dark usually triggers an accel/decel.
I burned images at about 20-30mm/s. Using about half power on the laser in pine.
I’ll look I am pretty sure I posted my setting on the forums somewhere. I got it to almost burn an imagine in a piece of cardboard. It worked except the 100% black burned through. So I no you might lose some resolution but just turn down the laser.