We don't have anything but internet from comcast - but we do use a Roku player quite a bit. When using it, there is a blanking out of sound every so often. It's maybe every 10-15 minutes or so maybe? Hard to say when it happens so infrequently. We also have issues on TV's not using Roku, but they get out of sync and have to switch to SD instead of HDX. Has anyone solved this issue???
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