[SOLVED] Glitch when baking normal maps from mesh

[Gaiuscatullus16]

[SOLVED]

I saw duke cg's post: https://forum.allegorithmic.com/index.php?topic=6965.0 and noticed his normal maps looked similar to mine and saw he solved it by switching his FBX import settings from centimeters to meters. I tried this on mine and got a much cleaner result.
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I'm trying to bake a normal map in Substance designer 5.3 on a Macbook Pro, but have run into a strange glitch that leaves large artifacts on the normal map.

The glitch in question: http://i.imgur.com/nVbtwqY.png

The model with the broken normal: http://i.imgur.com/WqzeqAW.png

Here's an album of my settings and mesh's I imported each as an FBX http://imgur.com/a/YHEHg

I understand that there have been some normal map baking problems on macs before, but I was able to successfully bake a normal map on a low poly mesh before using tutorial files, so I don't think thats the problem. All is help greatly appreciated!