I have tried with the shield both ways Tuner Sharing off and on... no difference. Disabled surround sound. Using software decoder. Turned off dolby on the shield... just trying anything right now.
The HDHR and NAS are both connected to the same physical switch.
So I just did an experiment.. both the firestick and shield are using channels with tuner sharing enabled. My wife is in the bedroom watching channel 12.3. So I tuned to this channel... should use the same tuner since tuner sharing is enabled, yes? Mine is frozen...... hers is still playing... If the hdhr was the issue I would expect her to be having issues as well....