Every time I have someone join my world, they end up getting kicked out, with the message below being displayed (see picture)

the internet connection is fine, but this happens every time I have someone join. Before around 1.21, this would not happen, and if it did, it would be very rare. Now playing with friends is very laggy and kicks them out frequently. This can also happen if I join someone’s world.

how to reproduce:

join someone else’s world or have someone join yours.

stay on the world for a bit.

it will eventually kick you or them out.

i’ve observed that it can happen anywhere from just a few minutes to several hours until you or they get kicked out..