Bambu Slicer and the AMS could be optimized better

So when the AMS prints in multiple colors, It rotates through the colors for each layer, for example, if its printing yellow and black, it prints yellow and then black, it raise to the next layer and prints yellow and black again. A much better way would be to print yellow then black, raise to the next layer and then print black then yellow, then raise to the next layer and print yellow then black. This would minimize filament changes, speed up prints, and minimize waste. Seems simple, so not sure why it isn’t done like this.

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I thought I have seen prints do just that. I just checked one of my projects that only uses white and green and the Bambu Slicer preview shows it printing just as you describe. It prints white then green, continuing with green on the next layer and then a switch to finish with white, and starts with white for the next layer, and so on. I have a P1S and generally use default settings, but the X1C profile does the same. I wonder if some settings change or interfere with this.

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I’m using minamally changed settings and it seems to work that way. For a two color object, if it worked like I describe, that is like half the number of filament changes. There must be an obvious reason they don’t do it, but I don’t see it.

In the slicer qualitity settings you can specify where the seem position should be located. If you select to start at a specific position it likely has to start with the same color. Might be it would optimize if you say “random”.