InfiltratorDemo rendering is entirely broken on 10.11.6 using AMD GPUs when the shaders are compiled to byte code using the Xcode 8 Beta 2 toolchain. This does not appear to occur with the Xcode 7.3.1 toolchain.
1. Build SCW & UE4
2. Run UE4 with args: InfiltratorDemo -game -windowed
There's no existing public thread on this issue, so head over to Questions & Answers just mention UE-33856 in the post.