I’m somewhat new to UE4, as I’m taking a course on udemy to start learning. However I’ve been using Xcode for quite a while (C++ projects, swift, etc.) but for some reason when I create a new project in UE4 and it opens Xcode my computer starts to slow down. Activity monitor shows Xcode is trying to use 20+GB of RAM somehow, my Mac only has 8GB so the rest goes to swap.
Yeah. Sadly, Apple did not fix this problem yet. If you wait long enough (how long depends on how much memory your Mac has), it’ll finish indexing and return to normal.
The other workaround is to delete UE4_Index target in UE4 project here, but by doing that you’ll disable syntax highlighting and auto complete for the engine source code.
This appears to now be fixed with today’s release of final Xcode 8.1. For me, memory usage now stays below 2GB vs the 40GB+ I was seeing with Xcode 8.0