Sometimes issues can arise while playing a specific app or game on your BlackBerry Priv, so you can try clearing the app or game cache to remove any temporary files that may have become corrupt.
Note: The “Clear Cache” option does not affect application data stored on your device.
  1. Using two fingers, swipe down once from the top of the screen
  2. Tap the 'gear icon' followed by Apps
  3. Within All, tap on the app or game that may be causing stability issues
  4. Tap Clear Cache