High in game ping and low server FPS, although server has low ping itself

[mmailaender]

Problem:

If we connect to the server, we have a high ping between 150 and 800ms and a server FPS between 5 and 15, although the server itself has a low ping of around 35ms. Could it be that there is an issue with that image or wine?

Context:

We have created with that image a server on a dedicated Linux machine.

The server should have more than enough power to run the server:
8vCores
16 GB RAM

If we do a traceroute with tracert to the server, we have around 35ms. So this is also the reason why we're assuming that the problem is maybe directly with the Conan image/config related.