Take a look at this post. Issues with little circles where plasma starts - #23 by ChelanJim
Generally your cut is going to be a “left compensation” meaning that the torch is to the left of the ‘good’ edge. The reason you are having problems is because you are cutting out of the middle of the metal and there is no outside cut. The CAM operation is expecting some “outside cut” such as a frame around your piece.
But take a look at the link I provided. You need to be running the simulation and you would have seen the lead-in/lead-out on the wrong side.
