I posted some of my settings in this thread on Post #33:
http://3dprintboard.com/showthread.p...mplify3d/page4
This is not a very good photo but here is something I printed yesterday that has overhangs and no support was used. It's about 112mm long and 10mm wide to give you some scale. Under that top part is a cone that has sides at a 45-degree angle. It printed well.
Frequent calibration is a must to get good prints from "any" slicer. I like to think I keep my printer well tuned. The other day nothing would print well. I spent hours testing and testing. Finally, I did a full ESteps calibration. I had done it a few weeks ago and it was perfect. To my surprise, it was extruding 123mm of filament when I called for 100mm. So it was overextruding nearly 25%. Once I had that recalibrated, things went back to normal. Once you get used to doing calibrations it's not very difficult and sometimes takes less time then repeated tests. So from now on, when things get stringy and just make no sense, I'll do ESteps and 1st layer height calibrations first so I at least know they are good.