It appears that MP is not always releasing, or deactivating, tuners in the HDHomerun Prime. If all tuners are inactive and I go into "TV" in MP, turn TV on, a HDHR tuner will get activated. Turn TV off and the tuner will get deactivated. Sounds good so far. However, if I turn TV on, and then go into full screen TV, MP will no longer deactivate the activated tuner no matter what I do (Click on stop, Click X to close MP, Got back to TV menu and turn TV off). If I select another channel in TV Guide and select it to watch live, another tuner is not activated (I can see the station change for the activated channel in the status of the HDHomerun web app). If I start recording the active channel, and then switch to another channel to watch, a new tuner is actived (expected) - with 2 tuners now active. Stop watching live TV and two channels remain active. Stop recording the recorded channel. Two channels remain active. Exit from MP. Two channels remain active. Stop the TVServer service. Two channels remain active. The only way I can deactivate the activated tuner is to open the HDHomerun Config GUI, select the activated channel, click on View (which opens the HDHomerun QuickTV app with live TV), and then close QuickTV. The HDHomerun QuickTV always deactivates the tuner when it's done with it.