im have big cube shaped part to print around 90x80x300mm with some holes in it.
When i load this in cura and set infill to 100% everything is fine and it shows me +/- 16 hours printing time.
When i set infill to any other value for example 50 it doesnt show infill in the layer view and and it doesnt generate Gcode for the infill, printing time is around 2 hours and doesnt change if i change the % of infill.
Also the top of the object is not filled (it is when i set infill to 100%)
im using Cura 15.04.3