Same project takes much longer to print on H2s than on A1

Bambu Lab Software Bambu Studio
1

I have quite a large project, sliced for the A1.
Calculated print time for the A1: 28 hours.

Now I change the target printer from A1 to H2S. Everything else remains the same.
Calculated print time for the H2S: 46 hours.

I would have expected more or less the same print time, since I have restricted the speeds and accelerations and both printers, but to the same values.

Both printers are configured with an 0.4 mm nozzle.
I’m using the Bambu Studio 2.4.0.70.

I have uploaded both project files.

A1 Kreiskehre links.3mf (136.1 KB)

H2S Kreiskehre links.3mf (126.3 KB)

2

Intersting one…
I see the support takes a significant higher amount of time on the H2S than it does on the A1. But so far I can’t see why.

3

For some reason limiting the travel acceleration disproportionally affects the H2S, perhaps it is doing more travel that we can’t see.

4

It has nothing to do with my settings. I took half a spool (filament spools from Makerworld) and sliced it with the default settings of both printers unchanged. Here, too, the H2S takes longer (3:50 hours) than the A1 (3:30 hours).

If you compare the values from Printer Settings / Motion ability, the H2S should be faster. I think there is something wrong with the Bambu Studio.

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