Speeding up Skeinforge with PyPy
After fiddling around with Repetier Host and Cura for slicing, it occured to me that I had no idea if the settings in the configuration would work or not. So even though the slicing time was impressive, I went back to skeinforge on ReplicatorG, because I don't have a machine to do extensive testing on.
So to fix the slow slicing speed, I changed to a different Python interpreter, in this case PyPy. Since ReplicatorG uses Python 2.7, you need to make sure to get the right version from here.
Unpack the file somewhere handy, go to ReplicatorG settings and navigate to the PyPy.exe in the Python interpreter settings. Slicing should be 5-10 times faster now. Not sure how muchn I gained, but what used to take at least 45 minutes now takes about 5, so I'm happy!