When a world running a LAN server is saving the world there is a chance it crashes the world causing extreme lag on the other players and then crashing them from the server. This has been affecting me for pre1 pre2 and 25w46a.
Environment
The LAN server was on a Windows 10 PC running vanilla Minecraft 1.21.10 pre-release 2
Hi!
Thank you for your report!
Can you provide logs and crash dumps? You can find them at %appdata%\.minecraft
Can you record and upload a video showcasing this issue?
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