Post processor to speed up MeshCAM NC files?

When I watch my Shapeoko 3 XXL run some MeshCAM NC files, I observe quite a few times when the cutter moves up and back down without changing X or Y. It would seem that the up move could be eliminated (maybe the down move goes to a lower Z). A fairly simple post processor should be able to recognize up-and-down Z moves, without X or Y moves in between, and eliminate them.

Has anyone worked on such an optimization (which could work on all gCode files).

Jon

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