title: FireBase slow loading
body: <p>I want setting app by firebase analytics. This app is working but, init loading is slow as 13~15 second. However different app is faster than my app. How can fix my app?</p>
  
  <p><strong>D/FirebaseApp: com.google.firebase.auth.FirebaseAuth is not linked. Skipping initialization.
  D/FirebaseApp: com.google.firebase.crash.FirebaseCrash is not linked. Skipping initialization.</strong></p>
  
  <p>Perhaps, I think that this part's problems.
  Please help me that.</p>