Fixing the XCode 9.x Simulator 3D/Map Performance issue

fix.md

Got a slow/unresponsive Simulator with XCode 9.x?

You're most likely using some kind of 3D or Native Maps in your App then, no? Awaiting XCode 9.1 (which contains a fix) here's a workaround which replaces the bundled OpenGLES.framework with the version from XCode 9.0 beta 3.

Please do note …

⚠️ Installing frameworks/binaries from unfamiliar/untrusted resources always involves some risk. I can only say that I’ve been using the linked version without any issues. Your mileage may vary.

Instructions

• Make sure the Simulator is closed

• Download OpenGLES.framework.zip from http://cl.ly/0q2k0r232o2h

• Extract the and move the OpenGLES.framework to its proper location:

   # Go to folder where the downloaded OpenGLES.framework.zip resides
   cd ~/Downloads
  
   # Unzip it
   unzip OpenGLES.framework.zip
  
   # Back up existing framework
   sudo mv /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/OpenGLES.framework /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/OpenGLES.framework.bak
  
   # Move “new” framework into place
   sudo mv OpenGLES.framework /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneOS.platform/Developer/Library/CoreSimulator/Profiles/Runtimes/iOS.simruntime/Contents/Resources/RuntimeRoot/System/Library/Frameworks/
  

That should do the trick :)

References

• https://twitter.com/stroughtonsmith/status/910203896332783616
• https://www.bram.us/2017/10/24/xcode-9-0-fixing-a-slowunresponsive-ios-simulator/