As far as Mach having a problem with it, none. Mach works exactly as I have it set up to work. The most problems I have with small segments is that it takes longer to run the program, motors run hotter, harder on tooling (I use small bits for detailed stuff, and jerky movement will snap them in a heartbeat), and quality suffers. With good lines and arcs, everything works fluidly. Just less stress on the whole system and a better final product. It's allot easier to make edits, too. I have had programs that wanted to walk the machine across the floor because of the jerky motion. If I were doing a one-off part, I wouldn't really worry so much with it, but when you cut the same designs repeatedly I think it pays to invest some extra time for a better program.