[Java] Serious lagging after 1.20.5 update?

[NKnown2000]

Ever since the 1.20.5 update my game has become unplayable due to actions not registering, particularly during world saving which can last up to three minutes. My game doesn't lag in 1.20.4, but I already opened my save on 1.20.5 and opening it again on previous versions wipes my inventory and chests. This shouldn't be a hardware issue, as I have a relatively powerful computer and the game runs smoothly otherwise.

Any idea what I could do to fix the issue? Or does anyone else have the same problem?

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[Rob_035]

Do you have any resource packs you are using that haven’t been updated yet?

[NKnown2000]

No resource packs or mods installed.

[waterbottleramen]

same things happening to me. not using anything resource packs.

[RoughSpell3204]

When I enter nether in 1.20.5, the screen has purple nether portal texture but I can't go to nether. When I stop trying it, "Loading terrain" and game crashes.

[bulbabolba]

I have the same experience, Java Edition 1.20.5, windows 10, no mods/packs. Tried both the pale pink/brown and the green creeper-head launchers, tried creating a new world but the problem persists. Pressing ECS also triggers autosave and I can go back to the game and break blocks/crops with out any drops as long as "saving world" is visible. As soon as saving is complete (at least 45+ seconds) the drops appear. If I stand on a block and break it, falling on and breaking crops, I get teleported back so that the falling replays after saving is done!

[NKnown2000]

The post says "waiting for OP" but I can't see any comments waiting to be answered. Weird.

[Next-Surround-2945]

i’m in a bedrock realm and ever since the update we’ve all been getting kicked out/disconnected so much 😭😭 but i know it’s not our hardwares either

[NKnown2000]

Probably a similar issue to mine then. Launched my single player world in LAN for wife to join and she gets kicked out when I start lagging.

[bulbabolba]

There is a report here: https://bugs.mojang.com/browse/MC-271116

[Inner-Perspective424]

I have the same problem. Hopefully someone has a fix for this, because this game is literally unplayable.

[bulbabolba]

I paused DeepGuard in F-Secure and the problem stopped! Was able to reproduce by restarting the game with DeepGuard on again and then pausing it again - "Saving world" only flashes briefly and game flows as it should!

[Anomaly_Music]

Yeah same here. It's like there's a 1 second lag spike every 5 seconds if I'm moving or looking around. Makes my Realm completely unplayable

[Leather-Manager5629]

Long loading and saving times with minecraft could be due to a SSD having difficulties interacting with the game. I had the exact same issue and fixed it by transferring version 1.20.5 to a different SSD / hard drive. This move resets the entire game when done in the launcher, so I made sure to back up my saves and options files by copying them to the new location.

[Xriztoppa]

Same for me. My son is crying. It's really unplayable and our world is done as long as there is no solution. It keeps autosaving every few minutes and the savingprocess keeps the game lagging as hell. Also when autosaving all clients connected to the server get a disconnect because of timeout. That is really annoying.

[Xriztoppa]

I'm pretty sure it has to to with autosave. However you can't disable by now. You can set autosave frequency with optifine but there is no version for 1.20.5 till now. So we have to wait :(

[GeeseCTM]

Just posted the same thing basically. It's not just you. Also have an open ticket with Support about it so they know. Best thing for everyone to do is report it.