I'm using a prusa i3 printer and recently installed Cura 15.04.4 och set the same setting I use in Slic3er 1.2.9 and pronterface.
The same STL files prints at 1:45 in pronterface and 3:54 in Cura.
Is is anyway to import Slic3ers setting into Cura to see if I missed a setting or is the slicer so different that it takes twice the time to print using Cura?