Hi, Trampas
#0 What version of Mach3 ?
#1 After changing Item's, Re-start Mach3, XML setting's are saved.
#2 Have you try-ed changing the Emulated to Checked in Port's Pin's Inputs, 0 port, 0 pin work's to.
#3 What is the processor speed of your computer ?, Try setting the Performance Options Advanced to Background Services in Window's.
Start, Control Panel, System, Advanced, Performance,Setting's,Advanced, Performance, Background Services, Checked then Apply, OK.
#4 Update to Mach3R2.0.008 try LazyCam, File,Lazycam.
Hope this Helps, Chip