When I do something on my Minecraft server, the world changes, but after a small period, my position and inventory goes back to where I was before. When I put stuff in a chest, it stays in the chest, and then I go get reset to my former inventory and position, and the stuff is still in the chest, so I have a duplicate. When I build, the building stays. But I just reset my position and inventory. This is happening to other players, by the way. How do I stop this lag?
Minecraft – How to stop this lag
minecraft-java-edition-server
Related Solutions
If you're using Java 7, it has been known to cause issues running Minecraft. I would download java 6, and give that a try.
Also, if your server supports 64-bit, grab that version.
Update:
The only other advice I can offer is to maybe grab a server auto-restart plugin for bukkit, perhaps give one of those a go, and set it to 6am or whenever your server is least busy. Not an exact solution, but perhaps a livable workaround?
You can get ones that give logged on players warnings when the server will restart as well.
One I've used in the past is Simple Restart. It allows you to set up intervals for restarting & warn players at specific times.
I hope this helps
There are several things that could be causing this:
Proxys, if you're using a proxy it could delay some information and not others.
Magic Launcher, I have found that having Magic Launcher's console open will stop all incoming connections when it receives a Coloured message. this can be fixed by launching it without the console.
Distance, if the server you play on is physically further away, then it could severly delay information going between you and the server, especially if you have a slow internet connection, to find where the server is located go to http://geoip.flagfox.net/, type the server IP or domain name in the field that looks like this:
Server lag, if the server's TPS(Ticks Per Second) is reduced, then it will start giving up on those with a slower connection. this can be fixed by getting a better internet provider.
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Best Answer
This is called desync and rubber banding(because your position moves back and forth like a rubber band). What this basically means is your server can't keep up with what's happening in game and is ticking behind. This is why it appears like you have 2 of the same item, the client is desynced from the server (which sees only one). Assuming you have access to the console you can check to see if you get a message like "server is overloaded" or "last tick took x number of seconds"
If you are locally hosting you can try to allocate more ram to the server by modifying the run.bat file (or whatever it happens to be named) to allocate more ram. If this doesn't fix it you can look into getting a better cpu or IF your cup is compatible and you have PROPER(preferably water) cooling you can try overclocking your cpu.¹
If you are cloud hosting you can purchase(or in some cases earn) better computing resources. Or check if you can allocate more.
Independent of where you are hosting you can install plugins/mods that aim to reduce server lag, this isnt a mod like optifine which is client side, rather these are server side that run on the server to reduce lag. This answer showcases a few popular mods for fabric that do just that.
¹I am not responsible for any overclocking related hardware or software failures or damages that may be caused by overclocking your cpu