I have the same issue, but it does not happen on the whole map. Basically our spawn and the chunks where most player-bases are located, do work or at least do not crash. The error does come up a few times, but not very often.
Then I wanted to look if everything still works in 1.17.1 on one of my projects, but teleported to the wrong cooordinates (missing minus), which still worked. But just after teleporting to the correct coordinates, it crashed and did also crash everytime I logged in at that place. I managed to send another teleport command on logging in just before the next crash to get away right in the middle of an ocean (mixed up coordinates again), where it also crashed but this time so fast, that I could not get any command out on logging in. Therefore I had to edit my NBT to get myself back to our spawn/bases. All of this happened in a part of the map, where there should not be any newly generated chunk. Also both places were it crashed do have way less changed blocks then our spawn/bases chunks.
I have the same issue, but it does not happen on the whole map. Basically our spawn and the chunks where most player-bases are located, do work or at least do not crash. The error does come up a few times, but not very often.
Then I wanted to look if everything still works in 1.17.1 on one of my projects, but teleported to the wrong cooordinates (missing minus), which still worked. But just after teleporting to the correct coordinates, it crashed and did also crash everytime I logged in at that place. I managed to send another teleport command on logging in just before the next crash to get away right in the middle of an ocean (mixed up coordinates again), where it also crashed but this time so fast, that I could not get any command out on logging in. Therefore I had to edit my NBT to get myself back to our spawn/bases.
All of this happened in a part of the map, where there should not be any newly generated chunk. Also both places were it crashed do have way less changed blocks then our spawn/bases chunks.