What is the model number of your Sanyo HDTV?
What ISP are you using? DSL, Cable? And what are the approximate speedtest numbers you are seeing with your high speed internet connection?
Which router are you using? What settings are you using on the router? Security being used? Have you tried changing the wireless channel to see if that helps?
Recently purchased an LG BD670 dvd player mostly for streaming Netflix to my Sanyo HDTV. While playing DVD's the unit works fine but when streaming Netflix wireless or wired I get intermittent signal which causes the video to studder and then loss of audio. Does anyone have a solution? I also am having problems with the audio sync.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic