In general, it is normal, but! The game of the principle is normal, but it starts to slow down in the water, or rather in the ocean! How is that? That the Redstone mechanism almost does not slow down! But in the ocean it is just something! 5 frames per second! YES ON THE SERVERS ALMOST DOESN'T LAGET! I gave money for that? You may think that the phone is weak - but no! Xiaomi redmi 5 is far from weak! Please, work on optimizing your "marine" update !!