I am having the same issues on my SMP. I copied the world to my local computer and experience the same problems in the same area of the world. I tried replacing the chunks with MCEdit to see if there was a problem with those particular chunks, but that did not fix the problem. The extreme lag persists, making the game nearly unplayable in this area of our world. Here's my log output:
[20:34:00] [Client thread/INFO]: Warning: Clientside chunk ticking took 1415 ms
[20:34:00] [Client thread/WARN]: Something's taking too long! 'root.tick.level.chunkCache' took aprox 1415.619102 ms
[20:34:00] [Client thread/WARN]: Something's taking too long! 'root.tick.level' took aprox 1418.318004 ms
[20:34:00] [Client thread/WARN]: Something's taking too long! 'root.tick' took aprox 1419.380519 ms
[20:34:00] [Client thread/WARN]: Something's taking too long! 'root' took aprox 1437.981892 ms
[20:34:01] [Client thread/WARN]: Something's taking too long! 'root.tick.level.chunkCache.recheckGaps' took aprox 1356.252147 ms
[20:34:01] [Client thread/INFO]: Warning: Clientside chunk ticking took 1357 ms
[20:34:01] [Client thread/WARN]: Something's taking too long! 'root.tick.level.chunkCache' took aprox 1356.852351 ms
[20:34:01] [Client thread/WARN]: Something's taking too long! 'root.tick.level' took aprox 1359.162572 ms
[20:34:01] [Client thread/WARN]: Something's taking too long! 'root.tick' took aprox 1360.120666 ms
[20:34:01] [Client thread/WARN]: Something's taking too long! 'root' took aprox 1381.083577 ms
[20:34:03] [Client thread/WARN]: Something's taking too long! 'root.tick.level.chunkCache.recheckGaps' took aprox 1377.456926 ms
[20:34:03] [Client thread/INFO]: Warning: Clientside chunk ticking took 1377 ms
[20:34:03] [Client thread/WARN]: Something's taking too long! 'root.tick.level.chunkCache' took aprox 1378.102646 ms
[20:34:03] [Client thread/WARN]: Something's taking too long! 'root.tick.level' took aprox 1380.981833 ms
[20:34:03] [Client thread/WARN]: Something's taking too long! 'root.tick' took aprox 1382.0381 ms
[20:34:03] [Client thread/WARN]: Something's taking too long! 'root' took aprox 1403.58649 ms
[20:34:05] [Client thread/WARN]: Something's taking too long! 'root.tick.level.chunkCache.recheckGaps' took aprox 1402.137525 ms
Robert T
I am having the same issues on my SMP. I copied the world to my local computer and experience the same problems in the same area of the world. I tried replacing the chunks with MCEdit to see if there was a problem with those particular chunks, but that did not fix the problem. The extreme lag persists, making the game nearly unplayable in this area of our world. Here's my log output: