Ever since Swift 3 and XCode8 my project compiles quite slowly. Every time I add so much as an empty line to a file, recompiling takes a full minute. When I check the output, there is no particular file that takes very long. (I also used this tool to measure it:https://github.com/RobertGummesson/BuildTimeAnalyzer-for-Xcode)
It always appears to compile 4 files at once. The "rythm" is quite steady. Just very slow...
Also: Whenever I open or switch between files, it can take very long till I get autocomplete, or errors/warnings.
What things can I check? I almost feel like there is some flag I set that just drags down the build speed like crazy..