[MC-858] Server lag in singleplayer Created: 27/Oct/12  Updated: 03/Jan/24  Resolved: 31/Oct/15

Status: Resolved
Project: Minecraft: Java Edition
Component/s: None
Affects Version/s: Minecraft 1.4.2, Minecraft 1.4.6, Minecraft 1.4.7, Snapshot 13w04a, Minecraft 1.5, Minecraft 1.5.1, Minecraft 1.5.2, Snapshot 13w19a, Snapshot 13w21a, Minecraft 1.6.2, Minecraft 1.6.4, Minecraft 1.7.1, Minecraft 1.7.2, Minecraft 13w48a, Minecraft 13w48b, Minecraft 13w49a, Minecraft 1.7.3, Minecraft 1.7.4, Minecraft 1.7.5, Minecraft 14w11b, Minecraft 1.7.9, Minecraft 14w26c, Minecraft 1.7.10, Minecraft 1.8-pre1, Minecraft 1.8-pre2, Minecraft 1.8, Minecraft 1.8.1, Minecraft 1.8.3, Minecraft 1.8.4, Minecraft 1.8.8, Minecraft 15w37a, Minecraft 15w42a
Fix Version/s: None

Type: Bug
Reporter: Martin Bittermann Assignee: Unassigned
Resolution: Invalid Votes: 45
Labels: None

Issue Links:
Duplicate
is duplicated by MC-6701 After digging block it would reappear Resolved
is duplicated by MC-7409 Using an Efficiency diamond shovel on... Resolved
is duplicated by MC-8594 Mined blocks reappearing, no drops. Resolved
is duplicated by MC-9428 Blocks respawning Resolved
is duplicated by MC-11008 Breaking block glitch! Resolved
is duplicated by MC-13718 Block Breaking/Suffocating Resolved
is duplicated by MC-16054 Invisible block Resolved
is duplicated by MC-16524 Block Returns Resolved
is duplicated by MC-20054 Cant pass invisible sand Resolved
is duplicated by MC-41197 Mining Blocks, they break and then re... Resolved
is duplicated by MC-41934 Blocks after trying to remove then th... Resolved
is duplicated by MC-42088 When placing or breaking blocks in si... Resolved
is duplicated by MC-42112 Destroying Blocks Not Working Correct... Resolved
is duplicated by MC-42114 Block and regular lag. Resolved
is duplicated by MC-42134 Offline Lag Resolved
is duplicated by MC-42188 MC Lag in game since version 1.7.4 in... Resolved
is duplicated by MC-42196 Random worlds will only half load wit... Resolved
is duplicated by MC-42229 Server view distances greater than 8 ... Resolved
is duplicated by MC-42259 Blocks reappear instantly after destr... Resolved
is duplicated by MC-42467 Falling down while sneaking Resolved
is duplicated by MC-42707 Blocks Re-appear after destroyed Resolved
is duplicated by MC-43438 Minecraft Lag issues Resolved
is duplicated by MC-43943 Stalling mine Resolved
is duplicated by MC-43948 When destroying a block it reappers f... Resolved
is duplicated by MC-43952 Blocks not breaking right Resolved
is duplicated by MC-44048 Block Removal/Mining Glitch Resolved
is duplicated by MC-44105 Game is in Slo-mo, when I break a blo... Resolved
is duplicated by MC-44278 Glitches Resolved
is duplicated by MC-44460 Blocks Taking Awhile to Fully Break Resolved
is duplicated by MC-44981 Block Lag Resolved
is duplicated by MC-45258 If in a world generated before 1.7.4,... Resolved
is duplicated by MC-45944 amplified world unplayable in 1.7.4 a... Resolved
is duplicated by MC-45985 No block for mining Resolved
is duplicated by MC-46319 Reappearing blocks Resolved
is duplicated by MC-49003 Hostile Mobs Frozen Resolved
is duplicated by MC-49994 Delayed block drops then set back to ... Resolved
is duplicated by MC-50088 Reappearing mined blocks (Minecraft R... Resolved
is duplicated by MC-51798 Blocks break and regenerate Resolved
is duplicated by MC-51915 Blocks break then reappear Resolved
is duplicated by MC-52044 new update has glitch Resolved
is duplicated by MC-52056 not working right Resolved
is duplicated by MC-52257 Blocks constantly reappear when broke Resolved
is duplicated by MC-52662 Random; blocks taking multiple attemp... Resolved
is duplicated by MC-53055 mineing block reappearing Resolved
is duplicated by MC-53882 Reappearing blocks and no entities Resolved
is duplicated by MC-55028 Blocks are not destroyed when you hit... Resolved
is duplicated by MC-55195 Re-appearing block Resolved
is duplicated by MC-55346 when i destroy the block it not give ... Resolved
is duplicated by MC-55532 Blocks Reapearing / SSP Server Overlo... Resolved
is duplicated by MC-55537 breaking blocks Resolved
is duplicated by MC-56492 Object breaking in Survival Resolved
is duplicated by MC-56699 Blocks flash while being destroyed Resolved
is duplicated by MC-57638 Fast Redstone clocks create server la... Resolved
is duplicated by MC-59296 Beat up wood blocks disappear then re... Resolved
is duplicated by MC-61492 when i mine a block whether its a pie... Resolved
is duplicated by MC-61550 Blocks reappearing after mined Resolved
is duplicated by MC-61963 Blocks Reappearing (14w28b) Resolved
is duplicated by MC-62099 Snapshot server-like lag in singlepla... Resolved
is duplicated by MC-62616 I mine a block and then it again appears Resolved
is duplicated by MC-64779 Annoying Bug Resolved
is duplicated by MC-65715 Takes multiple tries to break every b... Resolved
is duplicated by MC-65773 Right-click permanently 5 second lagged Resolved
is duplicated by MC-66967 Block Lag in Singleplayer Resolved
is duplicated by MC-67788 Worlds barely load if at all, chunks ... Resolved
is duplicated by MC-68638 Blocks Break then reapear then break ... Resolved
is duplicated by MC-69149 Blocks re-appear after destroying them Resolved
is duplicated by MC-70493 Minecraft wierd lag?/ no update of bl... Resolved
is duplicated by MC-70559 Delay of Time durring play Resolved
is duplicated by MC-71102 Entity run laggy Resolved
is duplicated by MC-71185 Like server lag but in singleplayer? Resolved
is duplicated by MC-71215 all blocks brake then reappear when m... Resolved
is duplicated by MC-74455 Block Mining Glitch Resolved
is duplicated by MC-75498 Shovel Efficiency IV conflict Resolved
is duplicated by MC-76030 Blocks reappear after they are destro... Resolved
is duplicated by MC-77388 Multiplayer like lag in singleplayer Resolved
is duplicated by MC-80051 Reappearing blocks Resolved
is duplicated by MC-80140 Mined blocks regenerate/reappear; maj... Resolved
is duplicated by MC-84049 Singleplayer "lag" when changing rend... Resolved
is duplicated by MC-90964 Ghost block / Phantom Block Resolved
is duplicated by MC-93304 Blocks not breaking Resolved
is duplicated by MC-94571 Blocks don't disappear when mined Resolved
is duplicated by MC-95064 Blocks don't drop anything Resolved
is duplicated by MC-97477 Minecraft Single player overlagged Resolved
is duplicated by MC-98509 Block Breaking Delay when in Spawn Pr... Resolved
is duplicated by MC-98670 Food takes long time to eat Resolved
is duplicated by MC-98778 Effect last longer than normal Resolved
is duplicated by MC-121147 why is it that sometimes if i break a... Resolved
is duplicated by MC-122896 Blocks reappearing when mined Resolved
is duplicated by MC-124732 Destroy Block Lag Resolved
is duplicated by MC-124755 The game doesn´t let me or destroy an... Resolved
is duplicated by MC-124758 Double (some times triple) break bloc... Resolved
is duplicated by MC-132467 After destroying the cube, the same s... Resolved
is duplicated by MC-133175 Breaking blocks like I have pings Resolved
is duplicated by MC-134028 block reapears Resolved
is duplicated by MC-134813 Issue with Breaking Blocks Resolved
is duplicated by MC-135566 walk a distance, then it teleports me... Resolved
is duplicated by MC-135615 Breaking block bug Resolved
is duplicated by MC-137209 I was mining but I couldn't pick up b... Resolved
is duplicated by MC-137381 blocks take some time to break Resolved
is duplicated by MC-137765 Explosion Lag Resolved
is duplicated by MC-137940 Error al quitar objetos con un hacha Resolved
is duplicated by MC-142216 Blocks not breaking correctly Resolved
is duplicated by MC-178706 BLOCKLAG Resolved
is duplicated by MC-178970 BLOCKLAG Resolved
is duplicated by MC-179288 BLOCKLAG Resolved
is duplicated by MC-216172 The world was super glitchy Resolved
is duplicated by MC-232468 Game freezes mobs for 5 seconds, and ... Resolved
is duplicated by MC-263439 When breaking a block, it can appear ... Resolved
is duplicated by MC-263668 Instant mining blocks in cobwebs does... Resolved
is duplicated by MC-267711 Blocks have to be broken twice Resolved
is duplicated by MC-173 dirt disappears and reappears when di... Resolved
is duplicated by MC-869 Block won't be destroyed. Resolved
is duplicated by MC-2551 When mining stone with a pickaxe, the... Resolved
is duplicated by MC-3356 Mined obsidian doesn't disappear then... Resolved
Relates
relates to MC-38160 General Server Lag (Highly CPU intens... Resolved
relates to MC-5694 High efficiency tools / fast mining d... Resolved
relates to MC-62166 Breaking / placing / changing blocks ... Resolved
relates to MC-89262 Block lag / Door delay / Pressure pla... Resolved
relates to MC-100219 Efficiency IV Creates "Ghost blocks" Resolved
CHK:
Confirmation Status: Community Consensus
Game Mode: Survival

 Description   
Moderator Note

"Block lag" is not a bug, it is a symptom of one of myriad causes. There are multiple things you can try:
• Turn down your render distance (to 8 or lower)
• Turn VBOs "on" in video settings
• Make sure you don't have any possibly lag causing things, like too many entities
• Update your graphics card drivers
• Give Minecraft more RAM (with regular resource pack, 2 GB is enough)
• Upgrade your hardware

When the player is clearing blocks and clears one or two blocks they are instantaneously regenerated after those blocks were cleared. The same happens when placing blocks, they disappear for a while at first.

The internal server is having low TPS and therefore registering the block-breaking action from the client very late. This leads to the client re-displaying the block again, until it gets the confirmation from the server that its actually broken, seconds later, or not at all. At the end, the block is either broken or still there, on both client and server.



 Comments   
Comment by GamerPro08 (Inactive) [ 18/Jul/21 ]

Can confirm, that it's still in Minecraft 1.17.1.

Comment by Sam Bone [ 13/Feb/16 ]

Only when breaking blocks at non- instant speed.

Comment by Sam Bone [ 13/Feb/16 ]

Got it terribly in 1.7.3/1.7.4. On my LP world, but now only new worlds.

Comment by Gabe Underwood [ 24/Jan/16 ]

turning down my render distance and turning VBOs on worked. Thanks!

Comment by Galaxy_2Alex [ 31/Oct/15 ]

@Brian McNamara: Thank you, I'm going to add a slightly modified version of this to the description.

Comment by Brian McNamara [ 31/Oct/15 ]

I just want to add some general advice to try before asking for any help diagnosing performance problems in Minecraft:

"Block lag" is not a bug, it is a symptom of one of myriad causes. Before anyone can help you diagnose a specific problem, I think you need to go through a checklist like this:
•turn down your render distance (to 8 or lower)
•turn VBOs "on" in video settings
•after doing that, exit minecraft, restart it, and then
•create a new default world
•let the world load for 30 seconds

Now, did the block lag in that fresh world go away? If so, then the problem was probably one of
•you had your render distance too high
•you had the wrong VBO setting
•you didn't give the world time to generate (the terrain generator lags the game a bit at the very start)
•something about the other world you were previously playing on is laggy (e.g. too many entities, chunk corruption, 1.7 chunk conversion, ...)

If the problem persisted in the fresh new world after performing the original checklist above, then you need to take a screenshot of the F3 debug screen, which can help diagnose other issues, such as
•bad graphics card
•non-64-bit java
•insufficient memory
•other tasks on your computer throttling CPU/disk

But it's not necessarily "a bug" in the game, usually it's a user misconfiguration or insufficient hardware, and without lots of this extra diagnostic info, there's nothing anyone can do to help.

Comment by Galaxy_2Alex [ 31/Oct/15 ]

Invalid
This is caused by the system not being able to keep up with the game. The report is too generalized, and does not outline any potential causes. It might have been better in earlier versions for you, yes, but the game changed over time. If you have this issue, turn down your render distance and make sure there is nothing too complex running in your world (or too many entities).

Please comment if you don't think this applies.

Comment by Denis [ 12/Sep/15 ]

I experience this bug when I am playing version 15w37a. In version 1.8.8 all is ok.

Comment by Martin Bittermann [ 26/Aug/15 ]

Did anyone notice that the comments here describe two completely different phenomenons?

  • Block reappears after client broke it - then finally breaks after about a second. Caused by server overload / lag. Fits the bug description on this page.
  • Quick mining e.g. with Efficiency-enchanted tools leaves block in place server-side but client thinks it's gone. Bad collision when player runs into it. Shown in the video posted by Marios and further described in the comments by Apocalypsing, William McDermott, JONATHAN_89, [Mod] fienxjox, Roachy, and Classic. That bug does not belong here and is actually reported in MC-5694 and MC-7409.

I hope the mods can untangle this somehow.

Comment by Matthew Reynolds [ 21/Aug/15 ]

Try and upgrade to Windows 7 or 8.

Comment by Tom Shea [ 14/Oct/14 ]

I still have this happening but I find that it reduces if you set the memory to 4gb and the part of the cache (I think it's at the end of the java options sting in the launcher profile currently at 128 to 256M (cache?) Java 1.8.20 seemed to clear it up a tad too without introducing any other noticeable bugs I could find in a typical survival run. Takes forever to load the first chunks when starting a new world, though.

Comment by El_Wray_ [ 09/Oct/14 ]

I had that block reappearing problem. I have tried anything with no success. In the end, i killed most of my animals and the problem disspears. I don't know why, but it works. That isnt logical, cause that problem was everywhere on the map. And yet that works for me.
I hope that it works for you too.

Excuse me for my bad english

Comment by StevenNL2000 [ 20/Sep/14 ]

That is probably true, but this is almost certainly caused by LAN worlds, as the client was doing all tasks on its own before they were added. The internal server apparently has the possibility to desync with the client (lag).

Comment by [Mod] CubeTheThird [ 20/Sep/14 ]

@StevenNL2000, disabling the internal server wouldn't make any sense. When "LAN worlds" were added, the way the client functions was completely changed. It works as 2 separate sections: the client (which performs tasks like rendering), and the internal server (which does things like chunk generation). This internal server works essentially the same way as though the client was connecting to an external server. To disable this server means half of the game components wouldn't be present, and it wouldn't work.

Comment by StevenNL2000 [ 19/Sep/14 ]

Singleplayer games have the possibility of lagging since LAN worlds were added, because this made the client act like a 1 person server. To fix this, Mojang needs to fully disable the server when the game is not open to LAN.

Comment by Conner Jackson [ 13/Sep/14 ]

I had this happen briefly before, but now it's back. When I mine a block, it disappears, then reappears. Then, 1 to 10 seconds later, the block disappears again and the item is dropped. The game was working fine all day, but it started happening about an hour ago. When I restarted my computer, it made the delay even worse. Happens with all tools, but only occurs when mining blocks. Ladders, torches, etc. work fine.

Version 1.8 vanilla. No mods, no textures, etc. Windows 7 Home Premium x64, 8GB RAM, Java 1.7.67 x64 (happens with x86 too), Quad Core Intel i5-3210M. Intel HD Graphics 4000.

Update: It seems I left my dispenser turned on at my chicken farm. So 4 gold swords, 2 iron swords, and 15 stacks of feathers later, I am no longer having an issue.

Comment by Tom Shea [ 07/Sep/14 ]

yeah the game is unplayable. it even lags if I turn all the detail settings to minimum and set the chunk render distance at 2 chunks. This game's just broke and has been like this ever since they changed single player to be client/server. I think if they were going to fix it they would have. I'm going to try some different versions of Java. Why this game is still crippled by the poor choice of Java for the language is mystifying.

Comment by Jeremy Haynes [ 03/Sep/14 ]

Still happens for me in the official 1.8 update, seriously makes the game unplayable. Specs: windows 7 8GB Ram AMD FX 4100 Quad core processor AMD Radion HD 7450. 64 bit Java

Comment by Curtis [ 02/Sep/14 ]

Still happens in 1.8 official release. Although for me it seems to only happen after many chunk updates.

Win 7
4gb RAM, 2 allocated, nothing else running.
AMD Radeon HD 6320 Graphics

Comment by Classic [ 01/Sep/14 ]

This also happens to me in 17.10. Both the server and client are hosted on a Windows 7 PC; 8gb ram, 3.0Ghz dual-core AMD Athlon II X2; Java 7 update 67.

I believe it results from the server not realizing you've switched to a shovel, and the blocks are broken (thanks to a combination of diamond quality, efficiency, and beacon) before the server registers they should break that fast.

Comment by Tom Shea [ 28/Aug/14 ]

yeah I stopped playing this whole series because of this bug. even if I bring my render distance down to 8 chunks, turn off all the fineries, it still happens constantly. I've been waiting 10 minutes for sand I placed to fall... another few minutes for other blocks I've broken to finally disappear... then a few more minutes to be able to be able to pick up the pieces. Just logged in to confirm it's still happening.

Windows 7 Pro SP 1 (all updates)
Java 7 u 67
i7-920 (1st gen)
24gb Ram
On a SSD (Samsung Evo 1tb)
Asus Geforce GTX 760

Comment by not telling [ 26/Aug/14 ]

confirmed for 1.8-pre 2

Comment by Dummiesman [ 13/Aug/14 ]

Impossible to play the latest Minecraft versions. :|

Comment by Kolby Hutton [ 11/Aug/14 ]

im having the exact same problem but with 1.7.10.

Comment by NekoJonez [ 21/May/14 ]

Confirmed. I have this bug a ton. Mostly in CTM maps.

Comment by Alex Robinson [ 21/May/14 ]

This is obviously an issue again and it makes it completely impossible to ever play survival in the latest snapshot. I guess https://bugs.mojang.com/browse/MC-55532 is a duplicate, but it's different causes. This really needs fixed. This is probably one of the worse bugs we have right now. This is issue looks more like for enchants, this is just everything.

Comment by Greg House [ 30/Mar/14 ]

It does the same in single player, should not be lagging there except for snooper or related connections...

Comment by JONATHAN_89 [ 28/Mar/14 ]

@Lane Yes, it also can due to lag.
But enchantments can make it more common.

Comment by Lane [ 27/Mar/14 ]

@JONATHAN_89 I don't think so, this bug still happens with an unenchanted stone pickaxe.

Comment by Roachy [ 01/Feb/14 ]

I agree with David Truog. I'm currently in 1.7.4 clearing a large area of the nether with Efficiency V shovels and pickaxes. This bug is happening to me a lot, and is exacerbated by switching between the shovel and pick (when I switch from mining soulsand to netherrack and vice versa).

When it happens the block looks to disappear client side, but when you walk into its space it jerks you around like your client is trying to move you forward but the server keeps resetting your position to be outside the block. The easy way to fix it (without relogging) is to attempt to place a block in the offending space. The block you place will not be placed, but the block originally in the space will reappear and the block-placing noise will not occur. That's the callsign of this bug. I've seen it recorded in several videos of youtubers I watch as well, mostly Etho and Docm77.

Comment by fienxjox [ 29/Jan/14 ]

Still happening 14w04b, I'm experiencing similar to what Jonathan mentions - Haste II plus Efficiency V makes this very common. It also seems to be aggravated if you switch tools quickly, i.e. speed mining stone with a pick axe, switching to shovel to get gravel out of the way, and switching back to pick axe will sometimes leave whatever the shovel was getting in place. This isn't the only way it happens, just seems to make it much more common for me.

Comment by JONATHAN_89 [ 28/Jan/14 ]

It might be because the breaking speed of a pickaxe has somehow increased so Minecraft thinks you haven't broken it yet so it replaces it.
Enchantments like Efficiency 4/5 speed up the mining. Haste also does this.

Comment by William McDermott [ 31/Dec/13 ]

I had a similar issue with a disappearing block in 1.7.4 on the boundary between a tundra and extreme hills edge biome. Not sure if that's relevant, but I was using an efficiency IV diamond shovel on dirt when it happened. I was in SSP running on a MacBook.

Comment by Marios [ 11/Nov/13 ]

On 1.7.2 SMP I noticed that the block disappears for the client but it is actually there, not allowing the player to move through it. I don't know about SSP.

Comment by Warwick Allison [ 29/Sep/13 ]

It still happens with 1.6.4. Blocks sometimes take 2 or 3 tries to keep them gone. Sometimes they reappear then disappear after a second or two (local server multiplayer).

Comment by [Mod] CubeTheThird [ 26/Sep/13 ]

Is this still a concern in the current Minecraft version 1.6.4 / Launcher version 1.2.5 ? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases.

Comment by Collin R Sawyer [ 15/Jun/13 ]

I've had this same issue as of Snapshot 13w24b.
Fix: (Worked for Me):
Open the world to lan and for other players settings, turn cheats on and I broke the block and it worked, I don't know how this is possible, but the block does not reappear and now breaks normally and drops the block normally. I was thinking maybe lag from the singleplayer server? I'm not completely sure but it worked.
EDIT:
After turning on your lan world and activating cheats, you may have to Save and Quit to Title and go back to your singleplayer world.

Comment by Apocalypsing [ 29/Mar/13 ]

I get this a lot in single player survival when using enchanted tools that break blocks quickly. I find that the most common way of running into this very annoying bug is by using a diamond shovel enchanted with effficiency IV on some dirt blocks. This bug still occurs in 1.5.1 too.

Comment by Levi Cromer [ 14/Mar/13 ]

I produced a version of this bug in single-player survival mode 1.5, while mining obsidian under a thin layer of water. When I finished mining the obsidian block, it would flash and instantly reappear as a whole block. I mined the block again and it did the same thing. Moving away would eventually cause the block to break and drop the item block normally....happened for a number of blocks, but not all of them.

Comment by Marios [ 26/Dec/12 ]

If it the same thing as in the video below, then it happens in 1.4.6 too.
http://youtu.be/O5lZnEqrKh0

Comment by Tails [ 30/Nov/12 ]

Is this still a concern in the current Minecraft version? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases.

Comment by Noah Hendry [ 07/Nov/12 ]

now i just died because i PLACED a block in the lava and it disappeared right after i placed it.

Comment by Noah Hendry [ 03/Nov/12 ]

it is on a new world that i made right after the "pretty scary update" And it is on single player

Comment by Chalmes (Jon) [ 28/Oct/12 ]

I'm getting this very rarely on a local server. As OP describes, a block will instantaneously reappear when trying repeatedly to destroy it. If I turn my attention to another block, and then try the problem block again, it destroys and stays destroyed. Mine is a newly generated 1.4.2 world, SMP.

Comment by [Mojang] Nathan Adams [ 27/Oct/12 ]

Is this singleplayer or multiplayer? Is it one area that happens or the entire world? Do new worlds do this or just one specific one?

Comment by Noah Hendry [ 27/Oct/12 ]

It does this so often that it almost make the game unplayable

Generated at Sun Jan 12 11:52:28 UTC 2025 using Jira 9.12.2#9120002-sha1:301bf498dd45d800842af0b84230f1bb58606c13.