Actiontec T3200M LAN performance

[PJJ]

I'm using our Gigabit Fibre connection for music jamming via the internet. Jamulus is a popular software applications for this. It uses a client-server architecture versus peer-to-peer systems such as SonoBus. If I run the Jamulus client along with a copy of the server on a Windows 10 or Mac machine the performance is very good as would be expected. Latency is 0 -1 ms, the audio is without artifacts. If I connect the client to a private server on the internet the performance is not quite as good. Latency to Seattle for example is 4 - 6 ms with periodic pops in the audio. However if I run a client and a server on different machines on the Actiontec's LAN, the performance is terrible. Why might this be?

[xray]

I assume you are runnig over Ethernet and not WiFi. Have you verified that you have gigbit Ethernet connections on both your client and server machines?

[PJJ]

Thanks for your question, xray. Yes, I'm using Ethernet; WiFi is turned off. Both NICs are gigabit. The upload and download values from fast.com confirm this.

[xray]

Is your local client the only client connecting to the server or have you opened it up to other clients?

There may be an issue with the firewall/anti-virus on the server machine. When client is on the server it bypasses the firewall.

[PJJ]

The server is private; not available to other clients. I have tested the setup with three different computers acting as the server and they all respond the same way to the client.

[rc]

Is the client connecting to the servers local lan address or the public address.

[PJJ]

Client is connecting to the server's local address: 192.168.1.74 or such.