Xcode 8.1 SourceKitService loads CPU completely

Question

SourceKitService eats CPU resource. Sometimes it loads the processor completely, when I work in Xcode 8.1 (Version 8.1 (8B62)). MacBook (macOS Sierra 10.12.1 (16B2555)) slows down and gets very hot.

1. How to fix it?
2. If I remove SourseKitservise how it will affect the work of Xcode?

Answer 1

I have decided this problem by reinstalling Xcode 8.1:

1. Open Application folder in Finder.
2. Find Xcode file and Move to Trash, then empty the Trash
3. Go to App Store Find "Xcode" in Search
4. Install Xcode

After installation, no need to enter Apple IDs in Preference>Account (but You should check whether all okay)

After reinstalling Xcode 8.1 SourseKitservise loads the processor on 15-20% (see screenshot)