This is why I dumped Fusion. I downloaded your DXF, imported it into Sheetcam, added a plasma tool for 14ga@225ipm (using Hypertherm 45xp) and post processed and had a tap file in less then 3 minutes! The only error that came up was some profiles were to small for the leadins and out and the program automatically removes them from those profiles. I have attached a pic of the toolpath and the tap file. You can try dry running the tap file with the plasma turned off if you want. You may have to slow the cuts down if you are running a different plasma. Sheetcam is WELL worth the $145 to end the frustrations!!
Since the forum wont let you upload a .TAP file the workaround is to just add a file extension that it will upload. The TAP file that I uploaded I added .dxf to the end of it so if you want to use it just save the file and rename it and remove the .DXF from the end of it and you will have a working TAP file.