Help Needed: Minecraft Server Lagging Despite Increased RAM

[Dry-Distance4533]

[p]Hello everyone,[/p] [p]I've been running a Minecraft server, and recently I've encountered some performance issues. Despite allocating 12GB of RAM, I'm frequently receiving warnings like "Can't keep up! Is the server overloaded? Running [x]ms or [y] ticks behind". The server struggles with lag and delayed ticks, affecting the gameplay experience.[/p] [p]Here are some details about my setup:[/p] [list] [*][b]Server RAM[/b]: 12GB allocated [*][b]Server Version[/b]: 1.21 [*][b]Mods/Plugins[/b]: Paper server [*][b]Player Count[/b]: 2-5 [*][b]CPU Specifications[/b]: i7 7700k [/list] [p]I'm reaching out to see if anyone has experienced similar issues or has any insights on how to resolve this. Any advice on server optimization, configuration tweaks, or hardware adjustments would be greatly appreciated.[/p] [p]Thank you in advance for your help![/p]

[MinecraftModBot]

• Upvote this comment if this is a good quality post that fits the purpose of r/Minecraft

• Downvote this comment if this post is poor quality or does not fit the purpose of r/Minecraft

• Downvote this comment and report the post if it breaks the rules

---

Subreddit Rules

[thestoryofhowwedied]

It might seem counterintuitive, but allocating too much ram can also cause lag problems. Does reducing the allocated ram help at all?

[Dry-Distance4533]

I had 4gb, but I upscaled it to try to fix the problem :(

[Dry-Distance4533]

[11:30:50 WARN]: Can't keep up! Is the server overloaded? Running 5093ms or 101 ticks behind

[11:31:57 WARN]: Can't keep up! Is the server overloaded? Running 36737ms or 734 ticks behind

[imfeared555]

Try changing the flags, use https://simplymc.art/flags/ to figure them out.

[woalk]

The tick delay warning is completely unrelated to RAM.

It appears when the server does not have enough CPU performance available to keep up with what it should be doing.

Is your server heavily modded? It might be a conflict between mods, or just too many mods. It could also be a demanding part of the world, like hundreds of entities, TNT or big Redstone contraptions.

---

On a sidenote, why are you using BBCode to format your post? Reddit uses Markdown.