Network Stats shows how your connection is doing while you're in a Session. Hosts and Guests both have it. Click Network Stats at the bottom of the Session window to open it.
An overall score out of 100. Anything in the high 90s is healthy.
Round trip time: how long it takes data to get from you to Sessionwire and back, in milliseconds. Lower is better. It's a good sign of how healthy your connection is, but it isn't the full delay you'll hear, because your DAW's buffer and your audio interface add their own time on top. See Why there's a delay, and why you can't jam live.
How hard your computer is working. If it reads high, close other programs and plugins you don't need.
These show how much audio and video you're receiving (down arrow) and sending (up arrow).
Data that never arrives. Any amount above 0% can cause clicks, dropouts or frozen video.
Data arriving unevenly. High jitter makes audio stutter and video judder.
High RTT, packet loss or jitter almost always points to the network rather than Sessionwire.
If your numbers stay poor on a wired connection, run the Network Test before your next Session. See Run the Network Test.