I purchased a Chromebook recently and have live streaming t.v. with Xfinity. However, the audio and video do not sync This happens a few minutes into a program. In order to reset syncing, I have to hit Refresh which takes me back to the original live streaming page. Lately, I have to sign back in for the program to start again. I tried watching "Roseanne" on ABC last night but couldn't watch the show continuously because the video and audio stopped syncing and I had to repeat and Refresh/Sign back in again. I checked with Google Help and was told this happens because Xfinity does not support HDTML5. Is there a fix for this or will I need to select a streaming t.v. service other than Xfinity?