I have really bad experiance with new version

This version seems to need even more RAM than before. In addition, when you work with Storyboard with it really takes lots time to even open it. Note, I have a 2 year old MAC and I have EL Capitain, but this is beyond ridiculous. It crash lots of time When I am working with Storyboard, On a slightly different note, you are also almost guaranteed to never attach to the simulator the first time you run it after the simulator, or Xcode was closed.
Whatever happened to the saving everyone 5 seconds speech Steve Jobs gave the first Mac team; that’s even more critical now? Guess Tim Cook et al just don’t care, unless you keep spending money on a new Mac(book) that has more RAM and SSD hard disk. Not everyone can afford the computer-equivalent of a AUDI every few years. Apple’s iOS developers, and us, are expected to make great, bug free, tools that take up few memory and battery resources; guess Xcode developers aren’t held to the same high standard!!

Stacy Donson about Xcode