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My Current max acceleration is set to 25. I'm not sure where i got that number from unless it was a carry over from my motor and driver settings in the old Mach 4. any suggestions as to what they should be . running NEMA 23 425oz motors and the Stepper Online DM542T Drivers. Don't remember my settings for the driver but I'm pretty sure i went conservative on them as I couldn't find the correct Drivers settings in Linuxcnc

Slow cut speed = plenty of hot slag = hard to clean
Happens due to limited acceleration of the machine as it has to slow down a lot on corners.
Try upping the acceleration for X and Y axis, it should help a lot if you can get the corner speed near the normal cut speed.