Lip sync is off when using the ROKU player attached to Vizio TV. I have updated, restarted and erased connection points in network, which fixed the issue short term, but it is now back after a couple of days being gone. I currently have my ROKU connected via wireless. I have taken volume leveling off as well. I'm assuming the long term fix would be to do a hard wire connection, but i'd really like to use the wireless is possible.