This issue concerns 1.10.0.7, but it is not listed somehoh.

I'm hosting BDS on a rented dedicated server on Ubuntu 18.04.2 minimal server.

These are my specs:

CPU: Intel Xeon Gold 6140 4x dedicated cores

RAM: 16GB

60GB SSD

We have a decent community, so there are 6 players online on average daily.

All runs smooth and fine if 2-3 players are online simultaniously, but as soon as 5 players are online at the same time the game is unplayable for everyone until people disconnect again (so it doesn't get better over time). So playing with even 5 people is a nightmare.

We thought maybe traveling through the nether or being apart a lot of chunks may be the problem, but we couldn't really figure it out. Even being in the same chunk causes insane lags.

I have nothing except the system and BDS installed, so the installation is as raw as it gets.

The attached image is a screenshot of when 4 players where online at the same time, and the game was purely unplayable.

But as you can see the average system load is only at 1.73% and just 1GB out of 16GB RAM is being used.

Also, it doesn't seem to make any difference what I set in the server.properties for max-threads. We've run the server for weeks on the default setting (8 Threads) and for another couple of weeks on "0" (which as it says should make BDS try to use all available threads). It doesn't seem to make any difference. As you can see in the image, pretty much all of the time just only one core out of 4 is being used.

Most of the time it's 1 Core at 100%, all other cores at almost 0%.

I also attached my current server.properties file.

We are german players and the server is also in germany, so it shoudn't be a problem. The server host is also very good with decent hardware and I had no troubles running other server software on servers by this host (netcup.de).

  Is my hardware not sufficient? I mean, it must be enough. It's a Minecraft server.
Or is the server software just insanely unoptimized so it doesn't use all the threads it could use.