please watch this video. It's from today with 1.16.pre5 -> the bug is still present. You can see the version on ~ 1:20 in the video, it takes a very long time after pressing F3 for MC to display the debug infos
original video:
https://drive.google.com/file/d/122JOpPtBG_YSEl0SF61FJwwOC-wZisLl/view?usp=sharing
(311MB / 4 min)
appended video version:
(compressed, scaled down, accelerated speed ) (debug-info @ 0:30)
also see pictures in MC-189331
Attachments
Comments 10
I can't find this in options.txt, so I added it exactly this way to it:
sync-chunk-writes:true
after loading the world, the game has converted it to:syncChunkWrites:true
As far as I can see, no chunks are missing, but this bug needs some time to appear. But now the game is completely unplayable, because it responses for ca 2 seconds, then freezes for 10 seconds, then is for 2 seconds responsable, then freezes ... and so on.
I try to wait some time, if the bug appears
sync-chunk-writes is not a valid configuration directive for the options.txt file. This directive is used only in the server.properties file. For the options.txt it indeed is syncChunkWrites.
When this happens, 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) here.
Also it should be mentioned that syncChunkWrites is enabled by default. If you're having issues with chunk loading like can be seen in the video, setting it to false might potentially fix it for you.
I have set syncChunkWrites to false now, the Problem is still existing.
See crash-report appended to ticket
I created the report exactly when the chunks disapeared
A few seconds after this starts to happen, please run /debug start, then move around for like 10-15 more seconds to keep the issue going followed by /debug stop. Then please attach the profile-report file here.
Also please run /debug report. Attach the debug report .zip file here, too.
See https://minecraft.gamepedia.com/Commands/debug for more details about the /debug command.
You've got some command blocks running that heavily impact your performance. Disable them in order to get rid of the lag.
So, now I had the time to check this. And you're right. These command blocks are part of an ore-generator, I built to learn more about command blocks and a bit more complex command block chains.
But here is the one thing, I can't understand. If I am in the overworld, the generator is running for one or two seconds, no lags, everything is fine, but if I am in the nether, it produces such heavy lags. Do you have any idea, why the behavior is so different?
For now I fixed this with a "execute if entity @a[nbt={Dimension:"minecraft:overworld"}] ...." command block.
Thank you for all the support ... and a big sorry for this bug report. Mea culpa!
Does setting "sync-chunk-writes" to true in the options.txt increase the chunk loading performance?