I red somewhere on the "infill layer thickness" but can't find it again. It was about Cura might not work as it should be.
Here it is:
I set up a print with 0.1 layer height and 0.2 "infill layer thickness". I can clearly see every second layer gets infill printed in. This works for up to 40% infill, I can see a reduction in printing time, this is what I am looking for.
BUT beyond 40% infill Cura behaves strange. It "prints" infill with same direction every two layers, then changing orientation. Which means now all layers have infill printed, printing time again