Editor: Metal support disabled, skipping device initialization

環境

Unity:2017.2.0f3

エラー内容

Editor: Metal support disabled, skipping device initialization

解決方法

Edit -> Project Setting -> Setting for iOS(PC) -> Other Settings
のMetal Editor Supportにチェックを入れる

Changing editor graphics device
Changing active graphics API requires reloding all graphics objects,it might take a while

というダイアログが出てくるのでApplyで解決