Numerous bugs during a multiplayer session on a dedicated server with the latest version of DCS WORLD

[ours]

Hello, During a three-player session on a dedicated server, everything was going well, but after more than an hour, we noticed:

- Heratic jumps in the position of AI planes

- Planes stationary in the air in the F2 external view

- AI planes flying backward in mid-air, reverse scrolling of the image, forward drag flow, etc.

- Players could no longer see each other on the F10 map In short, a situation that had become unplayable, even if each player could continue flying individually.

In the end, the server refused to stop despite a long wait, so I had to kill it via the task manager. I'm attaching the usual files from the server and the Tacview file. We've already encountered some of these problems in previous missions on previous versions of the server.

The backward flight (F2 view) of planes is a new feature!

The server was not saturated in terms of:

CPU load

memory

or network throughput

dcs.log server-20250608-201138.trk Tacview-20250608-202502-DCS-Host-1980-2000_ColdWar_decouverte_GW_V2.04_with_stopGap.zip.acmi

[-Cipher-]

this behavior usually happens when the server hangs or gets stuck in a loop.

there is something wrong with either your mission or your server constantly stuttering or getting stuck in a hanging situation.

-go read / check server logs

-check server task manager performance

if your server had low specs or shortcomings.

try turning track record off, tacview record off.

make sure the scripts you use is up to date.

make sure the mission you play is optimized.

please post the mission file and your server spec as well

 

[ours]

Additional Information The task manager shows no server saturation :

Core i7 750 4 cores + 4 HT 3.3 GHz
load < 70%
48 GB RAM, 29 GB used during the mission
1 TB SSD
Internal wired network 1 Gbps (1 client and server)
External uplink 400 Mbps (2 clients)

I am attaching the Tacview file of the mission with a client perspective.

Tacview-20250608-211113-DCS-Client-1980-2000_ColdWar_decouverte_GW_V2.04_w...p.zip.acmi

[ours]

As a supplement, I am attaching the mission that caused the problems on the dedicated server.

1980-2000_ColdWar_decouverte_GW_V2.04_with_stopGap.miz

[ours]

Also in addition to the bugs described, another TACVIEW file of the mission from a local client perspective (local network between client and server, 1 Gbits/s wired). The previous TACVIEW client was based on the external uplink of 400 Mbps (fiber).

Tacview-20250608-204532-DCS-Client-1980-2000_ColdWar_decouverte_GW_V2.04_with_stopGap.zip.acmi

[-Cipher-]

are you having problems with every mission you run ? or specifically on this one ?

[ours]

Hello, This has been a fairly recurring problem for several months, despite various server updates. In practice, the same mission causes problems after a certain amount of time has passed on the dedicated server, while the same mission launched from a non-dedicated server causes no problems at all! In both cases, the same MODS are installed and TACVIEW is active. The usual symptoms are random jumps in the position of AI aircraft (see the client's TACVIEW files near the end of the recording), AI aircraft stationary in the sky, Clients disappearing from the F10 map, but now there have also been reversals in mid-air!!!