[awerby]

What made you think it should have gone twice as fast? With a 3D carving like that, increasing the feed speed doesn't have much effect. The problem is that you've got a whole lot of tiny sideways moves, with constantly changing vertical moves interspersed, so that no single move can get going very fast before it's over. Maybe if your system could serve up each move faster, and the acceleration was higher, you'd make progress quicker, but that's not affected by feedrate.

[curiosity22]

Well it could be faster, the machine is running too slow. I understand there are a lot of sideways movements the more detail the slower it can get .. I think 5 hours is excessive. which is why I am asking the question.