i can reproduce the problem with the following steps.
setup:
create new creative world with seed -8013799900780587992
set view distance to 2, the minimum
set simulation distance to 5, the minimum
show server health debug screen with F3+2
run: /execute in the_nether run execute positioned -912 129 -144 run tp @s ~ ~ ~-16 0.0 0.0
walk at least one chunk south
observe as the single player server stops responding
while the client can continue without the server, the game must eventually be forcibly closed
players can work around the issue by making frequent backups, adjusting the simulation/view distance to avoid "bad chunks", and restoring the world whenever the server freezes. forcibly closing the game can result in data loss or corruption, so restoring from backup should be preferred.
antivirus is windows defender, though i'm sure this is a different issue.
see also MC-271948.
i posted steps to reproduce [here](https://bugs.mojang.com/browse/MC-271948?focusedId=1322433&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-1322433).