Minecraft Server (hosted by myself) lays. What's the mistake?

Ya
- in Servers
8

I have been updating my Minecraft server for quite some time (on 1.14.4). The server application is installed on my computer and released to the outside. There are three ways to get to the server:

- locally

- public IP

- dynDNS address

When I connect locally to the server everything runs smoothly. But when I connect via public IP or dynDNS, it lays as soon as larger animal masses are nearby (say, 20 chickens) and players generally lay down. At some point, it's so hard to fly off the server due to timeout (that does not happen if I connect locally). That worked well before the update but everything worked fine.

Now we come to the requirements:

- I will not list my PC-Specs here, because the server runs so well locally (so missing performance of the PC is to be excluded).

- I have a fast Telekom line (Up: 30.000 Mbit / s, Down: 100.000 Mbit / s)

- Router: FritzBox 7360 (is at 75% utilization, if the server is on)

- In the Windows firewall I have already approved ports as outgoing and incoming rule (otherwise you could not even connect)

- Java 8 Update 221 (64-bit) is installed

What I have already done:

- I have restarted all devices (PC, router) several times and reinstalled Java several times already

- I deleted the port release and the dynDNS several times and set up new

- I have completely rebuilt the server

-> start.bat and server properties can be found in the appendix

I do not remember what's wrong here and ask for clever solutions.

St

How much memory did you allocate? How many mod's / plugins are installed? How much RAM does your computer have?

Hamachi or VPN program installed?

Ya

There are 4 GB allocated, no mods / plugins. My computer has 16 GB of RAM. No VPN or Hamachi, but a port release in the router.

Co

What about your latency time (ping 9.9.9.9)?
Is there a packet loss? (ping -n 1000 9.9.9.9)

Ya

About cmd: 1-3 ms response time, bytes = 32 in each pass

Co

And packet loss after 1000 pings?

Also let a download run at the same time.
eg. https://speed.hetzner.de/

Ya

Ping statistics for x.x.x.x:

Packets: Sent = 1000, Received = 999, Lost = 1

(0% loss),

Approximately Times in millisec.:

Minimum = 0ms, maximum = 17ms, mean = 0ms

Co

Mmh funny, have no explanation

Ya

Ok, thanks for the help anyway!