Have opened a support ticket, but also adding it here in the event other community members are having the same issue:
I have attempted to connect to three different WiFi networks with the UL5. While it makes the connection, the speeds are so slow it is impossible to stream from any of the apps. I have tried the Hulu app (error code P-DEV320) and my own personal Plex server. I am running the latest firmware V.046.00, Hardware 1.0.0