Why is this print taking so long?

Firstly: My U1 arrived yesterday and it’s freaking amazing! Just for fun, I wanted to compare the print time and quality of the reference dragon between the U1 and my Creality K2 Plus. Here are the stats:

on the Creality: nearly 23 hours print time, 590+ grams of waste from color change poop

on the U1: around 3 hours print time, practically 0 waste (just the initial filament load poop)

NOW, I started printing a model I’d printed before on my Creality. It prints on two plates.

What I am baffled by is that the first plate on the U1 is taking over 11 hours while it took around 5 hours on the Creality. There is some color changing, but only really in the first 40 layers or so. The rest is all black.

The Creality has a max toolhead speed of 600ms and the U1 is 500ms. But, I can’t imagine that difference accounts for an 6+ hour difference!

I’d love some feedback on why there’s such a massive difference in print time. FYI: While the included screenshots below are estimates, I’ve now printed this model on both printers and the estimates are pretty spot on.

Here’s a screenshot from the Creality slicer: Creality Print time

Here’s a screenshot from the Snapmaker Orca slicer: Snapmaker U1 Print Time

(ALSO, sidebar: why does the forum limit to 1 embedded image and 2 links per post?)

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ok. I’m an idiot. It looks like the Snapmaker Orca slicer is defaulting to a layer height of 0.08mm while the creality slicer defaults to a layer height of 0.2mm. With a layer height that’s 2.5x thinner, no wonder it’s taking around 2.5x as long to print!

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It’s not 2.5x thinner, the other one is 2.5x thicker.

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I noticed a first Slice taking a long time and luckily that caught my eye :sign_of_the_horns: :sign_of_the_horns: