Extra infill wall count Problem

[Oneri 0]

I love being able to set my Layer Height to 0.15 and the Infill Layer Thickness to 0.3, so that my infill which doesn't need to look good can print twice as fast (infill is only printed every other layer). But when I try to combine this with Extra Infill Wall Count to give my infill more walls... They don't show up 😞 I have figured out that I have to choose between either Infill Layer Thickness or Extra Infill Wall Count, Cura Won't let me do both... I don't see any reason why. Could someone please help find a solution.