Most of the problems with the stability of the game arise from a lack of RAM or insufficiently stable Internet connection to the game server. If your device has 1 GB of RAM, unfortunately, we do not guarantee stable operation of the game. However, you can try closing and unloading absolutely all applications from the device memory except for the game. A large number of applications running in the background significantly slows down the performance of your device. Finally, make sure you have enough free memory space. It may be that the game periodically tries to save its additional files on your device, but due to lack of space, it cannot save these.