There is extreme lag (and by extreme, I mean it renders the game unusable) around the coordinates specified once all surrounding chunks have loaded in, so I suspect a certain chunk is "bad" somehow - I have my game set to load the max possible.
teleporting away from this location resolves the problem.
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kumasasa
Cannot confirm, see screenshot.
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Perhaps it's my world then.
Additionally, I've now discovered than an ender farm in The End that was built under 14w02c is causing the server to completely lock up if anyone visits it.
Should I attach my game world? if so, please let me know how to go about doing so.
kumasasa
Yes, please attach your world.
kumasasa
Please force a crash by pressing F3 + C for 10 seconds while in-game and attach the crash report ([minecraft/crash-reports/crash-<DATE>-client.txt|http://hopper.minecraft.net/help/finding-minecraft-data-folder]) here.
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Confirmed, I am also having this issue on my multiplayer server in chunks that run through my house. We even loaded a backup and replaced all blocks in the laggy chunks with air using the new /fill command and the low fps and lag was still present only in those chunks.
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Huh, sounds familiar. Could you take a look at your debug log while/after these lagspikes occur? It reminds me of this issue I still have sometimes, and correlates with debug messages talking about very long chunk load times.