[MC-308498] Excessive lag since 26.1

Ever since I have updated to 26.1, the “Tiny Takeover,” I have experienced excessive lag. Some times the image does not move at all up 8 seconds. Even now with the game paused, so nothing should be processing, it is lagging my computer. Even when I am on the title screen of the game, the rotating image, lags. I have done everything that has been suggested, clearing cache, checking for corrupted files, Optimize World, Lower my setting, defrag the computer everything looks good but . And every time I do, it seems to only get worse. Some times it eats my inputs, and others time I can tap forward and walk for three seconds.

Understand, before the update, I never noticed any significant lag except, maybe flying into new chunks. Many things suggest too many mobs but I have been playing in an area where there are only the minimal amount, far away form my main base and any farms.

These are my computer stats

Lenovo

Processor 13th Gen Intel(R) Core(TM) i5-13420H (2.10 GHz)
Installed RAM 8.00 GB (7.73 GB usable)
Graphics card NVIDIA GeForce RTX 3050 6GB Laptop GPU (6 GB)
Intel(R) UHD Graphics (128 MB)
Storage 676 GB of 954 GB used
System type 64-bit operating system, x64-based processor
Pen and touch No pen or touch input is available for this display

Edition Windows 11 Home
Version 25H2
Installed on ‎2/‎14/‎2025
OS build 26200.8457

Attachments

2026-05-29_13_44_21-stalker2-26_1_2.zip

2026-05-29_13_48_31-stalker2-26_1_2.zip

2026-06-06_13_40_56-Lag test-26_1_2.zip

2026-06-06_13-41-42_Lag test.zip

2026-06-11_10_03_34-stalker2-26_1_2.zip

Comments 23

[MOD] Greymagic27 2026-05-29T18:10:09Z

We do not have enough information to find the cause of this issue.

While the lag occurs, please press F3 + L once, then wait a short moment until profiling has finished.
Afterwards, please attach the generated .zip file containing the profiling results here. The file path is shown in chat; the file can be found in minecraft/debug/profiling/<DATE>.zip.

If you are playing on a server please additionally run the command /perf start to create a profiling report for the server. In case you do not have the permission to run this command, make sure that you're a server operator.
Once profiling has finished, please attach the generated .zip file from debug/profiling/<DATE>.zip of the server folder.

Please attach the affected (zipped) world file. If the file size is too large, please upload it somewhere else and then link to it here.

_{This issue is being temporarily resolved as}_{Awaiting Response}_{. Once the requested information has been delivered, the report will be reopened automatically.}

Quick Links:
📓 Bug Tracker Guidelines – 💬 Community Support – 📧 Mojang Support (Technical Issues) – 📧 Microsoft Support (Account Issues)
📓 Project Summary – ✍️ Feedback and Suggestions – 📖 Game Wiki

Michael Faulkner 2026-05-29T23:03:31Z

[media][media]

I tried to upload my world but there was an error probably because it took two hours to upload and said to refresh the page and the download was lost.

Michael Faulkner 2026-05-30T03:03:47Z

Here is a link to the world file.

https://drive.google.com/file/d/1qSTzgrgwB_GXR7Fd7wzenVbmIhS6Vzy0/view?usp=sharing

[MOD] Greymagic27 2026-05-30T10:02:49Z

Does this occur in a newly made world or only in your existing world?

Michael Faulkner 2026-06-06T20:44:22Z

It is also on new games it seems. This is one I just made, and right out of the gate, there is large spikes.

[media][media]

13 more comments

[Mod] ManosSef 2026-06-10T20:13:55Z

Is this still an issue in the latest pre-release?

_{This issue is being temporarily resolved as}_{Awaiting Response}_{. Once the requested information has been delivered, the report will be reopened automatically.}

Michael Faulkner 2026-06-11T17:57:55Z

How would I know? I only play the official current vanilla release. 1.26.2 i believe is the current one.

[media]

Here is the latest after only playing for a few minutes with larger lag than my previous debug report.

Okay loaded my lag test world, so only about 30 100 chunks loaded into the world, in the latest snapshot and yes the lag is still there.

Michael Faulkner 2026-06-17T22:13:23Z

Hello. Since I have received no suggestions and the fact my main world will not update,

“Failed to upgrade the world

This may happen if another program accessed the world during the upgrade. It may help to restart your computer and try again. If the issue persists, please consider reporting a bug,”

to the newest update, 1.26.2, I have decided to load up a backup of 1.21.11. It now works perfectly and I will just no longer update this world, nor will I return to this bug report.

Thank you for your time.

Melchior 2026-06-20T23:57:59Z

I am having this severe lag issue too on the v26.2 Java edition. modded and vanilla too.

It is soo bad that Windows explorer and the UI lags except for the mouse cursor..

but the latest bedrock edition worked fine…

I tried downgrading my Nvidia gfx drivers from v610.62 to v610.52 hotfix to no avail..

in the end either a full restart/reboot of the system or the CRTL+SHIFT+WinKey+B to force a reboot of the gfx drivers.. stopped the lagging but only if I shutdown Minecraft java edition first.

OpenGL renderer.

OS: Windows 11 Pro (x64)(v25H2)(Build 26200.8655) CPU: AMD Ryzen 9 3900X 12-Core Processor motherboard: Asus PRIME X570-PRO (BIOS_r5044 [01/04/2026]) Memory: 64GB, 2x G.Skill 32GB (PC3200)(DDR4-2137) Graphics Card: ASUS PRIME GeForce RTX 5070 12GB OC Edition, GPU by NVIDIA. so I have plenty of system memory/RAM and vRAM too I set my Minecraft moded install to 3GB XMX memory profile but it was using over that in Task Manager... so I may have to bump it to 4GB or 5GB of system memory.. but the issue appears to be out of dedicated vRAM.. race or memory leaks.

Melchior 2026-06-20T23:59:31Z

hmm should I have opened a new ticket?

David rueda González 2026-06-22T17:24:54Z

Same here, excessive lag, screen freezes for 5 seconds so often, it all started on 26.1 and still happens in 26.2 in my case

Melchior 2026-06-22T18:01:00Z

David rueda González, what graphics card do you have?
and driver version?

so the devs here can compare it to see what is going on.

Melchior 2026-06-23T22:20:15Z

In my case I disabled an incompatible resource pack.

https://www.curseforge.com/minecraft/texture-packs/misas-realistic/files/all

v1.21.q

it seems it was not fully compatible.. bummer.

the lag extreme went away and did happen on my modded client load..

hmm… so yeah.. at least in my case.

Melchior 2026-06-24T17:36:58Z

nope I was mistaken, it happened again even when using a different resource pack a 128x.

so idk what it is Nvidia driver or game bug?
I have been able to play Bedrock edition fine.

its only the java edition that is having this issue and v26.2 too.

David rueda González 2026-06-25T14:59:30Z

This are my specifications, i played with no lag until 26.1 came out, 26.2 the same and i’m trying the 26.3 snapshots and the same, game freezes for almost 10 seconds with 0fps every few minutes

Melchior 2026-06-25T15:59:34Z

ooh so not even v26.3 has fixed it yet…

But your PC’s a laptop I take it, the system memory is a tad bit low.

and 1GHz.. how much system memory/RAM does your laptop have, David?

my desktop PC I upgraded from 32GB to 64GB of DDR4 RAM

and went from 16GB of DDR4 RAM in my DELL laptop to a nice 32GB of GSkill TridentZ

But you said it wasn’t lagging before v26.1?

David rueda González 2026-06-25T17:05:14Z

It has 8 GB of RAM,it seems low but i used to play without problems,before 26.1 i didn`t have this problem, not always at 60 fps, but stable 40 fps without this lag that makes the game freeze in this newer versions

Melchior 2026-06-25T23:53:30Z

I was getting 160fps then the Java edition v26.2 would drop to 12fps or so after a few minutes or so..
totally UN-playable..

we have the same issue probably but different hardware..

maybe its a bug in the game than.

zNickolasBR 2026-07-17T17:32:02Z

Does it freeze your entire PC and look like a PowerPoint presentation? I'm having that problem right now.

Melchior 2026-07-17T18:05:01Z

total freeze need a forced reboot no..
only the whole Windows GUI is lagging real bad.. could be an Nvidia driver bug…

a CTRL+SHIFT+Windows-Key+B will force a reboot of just the gfx drivers.. 😄

Melchior 2026-07-20T02:37:15Z

this is also happening across v26.3 snapshots too..

so most likely a driver issue from Nvidia or Java or both I figure.

Melchior 2026-08-17T03:25:01Z

Is there any updates on this issue from Microsoft/Mojang? or Nvidia?

Melchior 2026-09-24T16:20:40Z

I grabbed the fresh v26.3 release and even with mods the lag issue seems to have gone away.. but I didn’t play for too long..

Excessive lag since 26.1

Attachments

Comments 23

David rueda González, what graphics card do you have?and driver version?

David rueda González, what graphics card do you have?
and driver version?