This can be caused by an out of line CNC plasma torch. Ensure you torch has beed aligned
using a straight edge to plate to be cut.
Ensure the torch height controller is turned on in the software / program, if the torch is too far away from work
when cutting this will cause poor cut.
Check the air pressure is correct, too lower / higher pressure than required will affect cut.
Check air supply for water, drain compressor and change filter in air dryer.
Replace torch consumables if worn, replace as a pair (Electrode and Cutting Tip)