Is XCODE worth in Mac for Unreal?

Hello. I use to have very good results in Mac without installing XCODE. But the engine always remember me that I have to install XCODE for better performance.

Please, anybody could let me know if is worth to install XCODE to obtain, for example, better lightmaps, shadows or better quality? Anybody could upload some screen capture of an example of a scene with XCODE and without?

I’m not a developer, I’m an interior designer.

Many thanks!