Audio drop outs on Apple TV

Recently I have incurred an annoying problem.   Every now and then the audio drops out for a second or two; there is no lag in video.
My set up:
iMac conected by ethernet to router (supplied by ISP: PCCW), connected to Apple TV (1st gen).
Apple TV is connected by HDMI to Panasonic Vierra.
I stream from iMac to Apple TV.
The problem is new.  Only change is new router; supplied after upgrade to optical fiber broadband.
Any ideas?

I apologize for the audio drop outs. I have sent you a private message to get account information from you so we can reprogram your boxes.
Anthony_VZ
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    **If someones post has helped you, please acknowledge their assistance by clicking the red thumbs up button to give them Kudos. If you are the original poster and any response gave you your answer, please mark the post that had the answer as the solution**
    Notice: Content posted by Verizon employees is meant to be informational and does not supersede or change the Verizon Forums User Guidelines or Terms or Service, or your Customer Agreement Terms and Conditions or plan

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