It looks like when I set nozzle diameter higher than 0,6mm in printer setup the value is ignored and considered as 0,6mm.
Off course I need to se higher than 0,6mm.
Tested with 2mm and only get 5 lines for infill per cm, so that seems to work.
Make sure your perimeter width is a multiple of the diameter so it can fit at least 1 line otherwise it might reduce width. CuraEngine uses same width for everything.