title: ReactNative: App runs on device can't respond to click event
body: <p>I develop the app with React-Native, and it is running very well in ios <strong>simulator</strong>, but when I run it on <strong>device</strong> it responds to my <strong>click event very very slow</strong>. But the scrollview is OK. 
  Anyone help me?
  Thanks in advance!</p>
  
  <p>PS:React-Native version:0.34.0</p>
  
  <p>PSS: I found out that this happens when I run app from the xcode project. And the xcode log console keeps printing many logs.</p>
  
  <p>PSSS: The RAM keeps up growing!!!!
  <a href="https://i.stack.imgur.com/ZshOW.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ZshOW.png" alt="enter image description here"></a></p>
  
  <p><a href="https://i.stack.imgur.com/lcrOR.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/lcrOR.png" alt="enter image description here"></a></p>
  
  <p><a href="https://i.stack.imgur.com/ev3mc.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ev3mc.png" alt="enter image description here"></a></p>