Minecraft – how do i clear block lag

minecraft-java-edition

so, in a singleplayer world, i just got a lag that looks like multiplayer lag.

there's like a delay between things, (when i push a button, it took longer to go back to normal. when i attack a mob (any type), they got damage, but the knockback is slow, like if they were in slow motion. etc.)

how do i fix this ??

i got this problem when playing a map. well, the map is kinda huge.
then i got this problem too when im playing single player with like 15 mods or so.

is this because my computer can't handle it ??

Best Answer

Since some version pretty long ago, singleplayer no longer differs from multiplayer - the game still runs a server inside, and client communicates with it.

Generally yes, it means that your computer has not enough processing power to handle all it needs to. I usually don't experience it, but I do when I start a new world - the game is busy generation the world and processing new chunks, so it has less time to process mob AI (including them being hit) and block updates.

You can try to allocate more memory to Java runtime in launcher (click Edit profile - JVM arguments - change -Xmx parameter to larger values), or reduce render distance in Minecraft options.

If none of this helps, and it is definitely related to a certain map (you don't get lags on simpler maps / with less mods), then, unfortunately, it is a problem of your hardware.

Related Solutions

Minecraft – Reduce Minecraft server lag

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

Minecraft malfunctions with a low enough Y-value

Because computers store numbers in limited precision.

With bigger numbers the precision gets worse and worse, because the numbers are stored something like 1.2345·10¹²³ (but in binary... it's a long story).

Here, I try to decrease a big floating point number by different amounts. Notice how changing it by smaller amounts doesn't do anything.

>>> a = -360287969785042688.0
>>> a = a-1; format(a, 'f')       
'-360287969785042688.000000'
>>> a = a-5; format(a, 'f')       
'-360287969785042688.000000'
>>> a = a-10; format(a, 'f')  
'-360287969785042688.000000'
>>> a = a-15; format(a, 'f') 
'-360287969785042688.000000'
>>> a = a-20; format(a, 'f')  
'-360287969785042688.000000'
>>> a = a-25; format(a, 'f') 
'-360287969785042688.000000'
>>> a = a-30; format(a, 'f')  
'-360287969785042688.000000'
>>> a = a-35; format(a, 'f') 
'-360287969785042752.000000'
>>> a = a-35; format(a, 'f')
'-360287969785042816.000000'
>>> a = a-35; format(a, 'f')
'-360287969785042880.000000'
>>> a = a-35; format(a, 'f')
'-360287969785042944.000000'

Notice how the difference between numbers isn't actually 35. It is the smallest possible difference between two such huge numbers in binary floating-point representation.

The same happens in the game. Multiple times per second it tries to decrease your Y position by vertical speed, which is apparently less than this minimal difference between two neighboring numbers.

But if you teleport by a larger amount, you obviously can break that limit.

This is clearly outside the scope of this site. But there is plenty of information on floating-point numbers.

Best Answer

Related Solutions

Minecraft – Reduce Minecraft server lag

Minecraft malfunctions with a low enough Y-value

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