Hello. I haven't played Minecraft Bedrock Edition on windows 10 for a long time, and recently decided to play with my brother (he plays with Xbox One S). We played in his world over a local network. And I constantly get a delay in control (only for the keyboard, everything is fine with the mouse). It is constantly changing, sometimes it can disappear, most often it is small (50-150 ms), but sometimes it becomes huge (1-5 seconds). A bad Internet is out of the question, because we play over a local network. When a brother joins my world, he doesn't have such a problem.

My laptop is not the most powerful, but if you do not touch the controls, the game does not lag in any way.

By the way, the same problem with servers. At the mineplex, for example, it is literally impossible to play various mini-games.

What could be the problem?
Here are my specifications for my laptop:
CPU: Intel Celeron N3060 1.60GHz
RAM: 4 GB
128 GB SSD
I don't think you need this, but anyways
screen resolution: 1366x768

Thanks for help!