When connected to UAD2+ or UAD3 via network the connection seems to be down for some seconds.

This occurs even when the UAD is directly connected to the host PC. What could be the reason?

1. The effect could occur if a connection to a local network is established and the second network adapter for the UAD is configured for local routing. Periodically broadcast bursts from network components could overflow the UADs firmware and that's why sometimes TCP packets are lost. To solve the problem do not enabled local TCP/IP forwarding.
2. The effect could occur when a running antivirus scanner periodically pulls down Windows's network stack. To solve that problem temporary disable the antivirus software.