Identify and rule out if it's the game itself to cause this bad issue. You are advised to reinstall it on your iPad. If it's not helpful, just simply reboot iPad or force restart it to refresh the device. You can also update with iPad or repair under recovery mode. However, to fix with no data loss,...

Good suggestion for rookies. However, Joyoshare Screen Recorder for PC is a good alternative as well when it comes to record game.