title: React Native. Why android emulator is so slow?
body: <p>The same project runs 60FPS on iOS emulator, but in android emulator everything is slow. I do nothing but there are hops in frame rate from 53 to 56. JS FPS and UI FPS are always identical. I created animated component and when I click on it everything runs smoothly on iOS (~60FPS), but android's JS FPS and UI FPS fall to 10FPS. Is it normal?
  I've read <a href="https://stackoverflow.com/questions/48086406/ui-of-react-native-app-on-ios-lags-and-fps-rate-drops-regularly">the link</a>. Debug mode is turned off, there is no any console.log() in code. I plug Android phone, interface becomes smoother, but JS FPS falls to ~14 when I start animation. Animations in React Native uses native thread. How is that possible? There are some tweaks I should apply?</p>
  
  <p>P.S. Mac Mini Late 2012, Quad Core i7, 16Gb RAM, SSD. AVD: Pixel XL, Android 6, x86, API 23, 2048Mb RAM, Graphics - Hardware GLES 2.0, Multi-core CPU 4.
  HAXM is used, as I understand...</p>
  
  <p><a href="https://i.stack.imgur.com/Nvdc1.png" rel="noreferrer"><img src="https://i.stack.imgur.com/Nvdc1.png" alt="enter image description here"></a></p>
  
  <p><a href="https://i.stack.imgur.com/0AW57.png" rel="noreferrer"><img src="https://i.stack.imgur.com/0AW57.png" alt="enter image description here"></a></p>