I assume it's this part:
2023-02-28 11:22:50.618 INFO onConnectToPeer 177745 DefectiveLettuc, offer: true (com.faforever.iceadapter.IceAdapter:111)
2023-02-28 11:22:50.620 DEBUG Peer created: 177745, DefectiveLettuc, localOffer: true (com.faforever.iceadapter.ice.Peer:32)
2023-02-28 11:22:50.622 DEBUG Now forwarding data to peer DefectiveLettuc(177745) (com.faforever.iceadapter.ice.Peer:53)
2023-02-28 11:22:50.622 INFO Sending Notification:{"method":"onIceConnectionStateChanged","params":[177734,177745,"gathering"],"jsonrpc":"2.0"} (com.nbarraille.jjsonrpc.JJsonPeer:529)
2023-02-28 11:22:50.627 INFO Received GPGNet message: Disconnected 177745 (c.f.iceadapter.gpgnet.GPGNetServer:116)
2023-02-28 11:22:50.627 INFO Sent GPGNet message: ConnectToPeer 127.0.0.1:57234 DefectiveLettuc 177745 (c.f.iceadapter.gpgnet.GPGNetServer:126)
2023-02-28 11:22:50.628 INFO Sending Response:{"result":null,"id":3,"jsonrpc":"2.0"} (com.nbarraille.jjsonrpc.JJsonPeer:574)
2023-02-28 11:22:50.628 INFO Sending Notification:{"method":"onGpgNetMessageReceived","params":["Disconnected",["177745"]],"jsonrpc":"2.0"} (com.nbarraille.jjsonrpc.JJsonPeer:529)
2023-02-28 11:22:50.633 INFO ICE DefectiveLettuc(177745): Initiating ICE for peer (c.f.iceadapter.ice.PeerIceModule:81)
2023-02-28 11:22:50.656 INFO ICE DefectiveLettuc(177745): Gathering ice candidates (c.f.iceadapter.ice.PeerIceModule:101)
2023-02-28 11:22:50.658 INFO Using official ice servers: [116.202.155.226:3478/tcp, 116.202.155.226:3478/udp, 116.202.155.226:3478/udp] (c.f.iceadapter.ice.PeerIceModule:177)
I basically see the same where local is offered and then using official ICE server (116.202.155.226 - in Germany) is used. Which is why the really high ping.