TeamSpeak Server packetloss only on one instance

We have a big packetloss problem on one virtual server.

Both servers in the screenshot are on the same host, but are differen ts3_virtual_servers, so I would belive that if the host is bottlenecked because of CPU/RAM/Network the same packetloss would occur on the second instance but its not.

It seems like there is some kind of cap that keeps instance2 running without packetloss but instance1 is doing bad.

Is there some setting we can set, so the virtual server has none limitation. we dont use other virtual instances so instance1 could happly use all system resources availible