how to increase number of tangents on an arc

I am trying to cut this arc (green line) on a CNC but when we generate the code in MasterCam its commanding the cut in several straight lines (tangents shown in grey) to form the arc- the code is generated this way because SolidWorks is making the arc this way. This is ok but we need to smooth out the arc alot by substantially increasing the number of straight lines and decrease their length so the CNC code commands to cut a smoother arc. Ive made the arc out of a spline and its still the same. Another cylindrical part i made to test also shows the same type of tangents so it must be in the SW settings. Running SW 2019 full functionality

Thank you!

SolidworksImport/export