I don’t think it does. I’ve recently did a carve that skipped letters in the middle of a word. A word, mind you, that I typed out without editing!
Again, I’m more convinced that it’s slightly crazed 
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That’s true too.
I think that somedays, like my wife, it just wants to screw with me. 
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I used to watch Calcomp 965 plotters work. It was interesting to try and predict the moves.
Duplicate geometry would tear the paper from over saturation
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Our Zeta Graphics plotters were built like tanks and had a voice-coil linear actuator for the pen-down movement. It developed enough force that we could run ballpoint pens at a really fast speed for draft plots (or anything that didn’t need the elegant liquid-ink lines). At the time the company folded we had developed vinyl-cutting prototypes using a swivel knife (shades of Stingray) that dropped in in place of a pen (we just adjusted the voice-coil current to set the cutting force), but Roland (I think it was) pretty much had that market tied up…