Cura grey large grey area, almost nothing fits… I can't seem to understand the margins that Cura uses or how to fix them for my machine. Look at this:



I can't seem to tweak the stuff under machine settings to anything that does this better:



Maybe a bit of dup of Cura not allowing full print area to used, but I think my case is a lot worse and can't be explained by skirts.
I had mistakenly left the setting "one at a time" in print sequence. This meaning the printhead needs a lot of room since it will go back and forth in z.

Cura allocates this extra space even if there's only one object.