Optimum Settings to speed up Xcode indexing and compiling

So using Xcode 8.2.1

Noticing extremely slow indexing and then Building - compiling times.

What are some steps and trick I can implement to reduce these long times?

Starting in Unity, what Build Settings should I use for development(pre release)? I'm already enabling 'Symlink libraries'.

I googled an came across several links about Disable Dsym file, but don't think these apply to latest Unity 5.5.2....

Optimum Settings to speed up Xcode indexing and compiling