Many of the Android TV platforms do not report accurate `SystemClock.elapsedRealtime()`
In addition this drift is not consistant accross multiple boxes, so the time offset
between any pair of boxes will vary over time.
This variance will lead to a drift in the Live Offset calculation.
Fix is simple, inValidate the NTP server query after a period of time (10 minutes)
and re-issue the call
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