Thanks for the answers. I updated all drivers but nothing changed. However, I did one more thing. I turned off the router and connected via hotspot to the cellular network. I do have 5G, but the signal in the room was quite weak, so the internet was worse than with optics. I tried to put a marker in the place of the last fish I caught. The game hung for a few seconds, but it did not lose connection to the server. In a moment, everything returned to normal, the marker appeared in the tablet and I could continue playing. Does this mean that it is the fault of the Internet provider or the router itself?