It sounds like you are "drip feeding" which means as the computer sends the G-Code, the machine reads and executes it, then dumps it. If you need to cut a second part, you must resend the code.
The problem arises because arcs are actually read by the machine as a lot of tiny straight line moves. If your Baud rate between the computer and control is low it can cause the studdering problem. Also the sheer volume of data the control is trying to process can overwhelm and slow down low grade controls. |