These are the steps which might be help you to fix your problem..
- Power down and unplug your equipment (Hulu device, modem, and router) for approximately one minute and then power back up
- If you are watching a video over a wireless connection, connect your device directly to your router with an ethernet cable
- Disconnect any other devices from your network
- Refer to your router manufacturer for settings and configuration information that can help improve the strength of the network.