Please make sure your device meets the game's system requirements. You can check the requirement on the game page on the Google Play.
Try to reboot your device and run the game again. It can resolve the problem. It's suggested to reboot your device from time to make it work smoothly and fast.
Also make sure you have the latest version of the game. In case your current version is not the latest one, please update it at Google Play.
- Run the Google Play Store app on your device.
- Touch the Play Store icon and then go to My Apps.
- Press the Update button See next to the game.