Ive set up a vanilla Minecraft server on my desktop computer and there is lag for no apparent reason

My brother and I have been trying to play on it, but it's lagging too badly. The lag is most visible when opening chests, crafting tables, interacting with mobs, and viewing players (lots of rubber banding and teleporting). There are no console errors, and the average tick is 7. I've used the command prompt to ping the server 50 times, and I got really low latency (I forget the exact number) with no packet losses. My computer is hardwired into the router, and I'm getting 70Mbps download and 20Mbps upload. I've allocated 20GB of RAM, and when running the server, my CPU (i7 11700k) utilization is sub 10%. If anyone has any ideas what could be causing this or has troubleshooting tips, I'd greatly appreciate it. My brother has been asking me to set up a server for years, and he finally thought it was up and working, and If I can't fix this, he will be pretty disappointed.
22 Replies
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ProGamingDk
ProGamingDk2y ago
average tick is 7?!!? its meant to be 20... u mean mspt?
Abrobot
AbrobotOP2y ago
yes Got any idea why it could be lagging?
invincibleanik
did you try paper server?
Abrobot
AbrobotOP2y ago
I set to 20gb
ProGamingDk
ProGamingDk2y ago
20 gb is too much for mc well theres no point in it
Abrobot
AbrobotOP2y ago
Is that really necessary though? From what i understand, my computer should be more then capable of running the server. I defiantly might be wrong, but i doubt it will fix whatever issue is happening. You really think it will help with whatever issue?
ProGamingDk
ProGamingDk2y ago
and it can cause more lag, although not ping/latency lag as this sounds like it is
Abrobot
AbrobotOP2y ago
can to much hurt the performance?
invincibleanik
does it lag when you login using the localhost ip?
Abrobot
AbrobotOP2y ago
we are connecting using the public ipv4 address. is that what you mean by "localhost ip"
invincibleanik
I mean is the server hosted on your PC? If yes, then you can join using the ip "localhost"
Abrobot
AbrobotOP2y ago
yes
invincibleanik
Can you try paper server and see if the lag is fixed?
invincibleanik
Pufferfish Host | Downloads - Pufferfish Fork
Download Pufferfish and Pufferfish+ Minecraft server jars
invincibleanik
It's a fork of paper
Abrobot
AbrobotOP2y ago
I could i guess, is it a lot of work to switch over?
invincibleanik
Not much. Downloading the jar file Creating a batch file and running it Accepting eula Starting the server That should be it You need jdk 17 too
Abrobot
AbrobotOP2y ago
ok the paper server is running correctly i believe, you said i need to get jdk to? ok jdk is installed, and the paper server is up and running
invincibleanik
Did you accept the eula
Abrobot
AbrobotOP2y ago
yes. I don't know for sure because my brother is not around to test, but it does seem to be working very well testing the server by myself I'm not to happy about having to switch to a paper server to fix it, because the vanilla really should have worked, and it feels like whatever the issue was wasn't fixed, but just handle better by paper. either way if it works it works I guess Ill wait to test with my brother, and if it works ill close the post. Thanks for the help @Invincible Anik @ProGamingDK
invincibleanik
Sure

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