My setup has been working great across my 7 Fire TV sticks around my home apart from the hardware deocding issue.
Until 2 days ago when suddenly after a few seconds of starting playback the picture will freeze for a second and I will get a message saying No HDHomeRun detected, after 2 seconds it will find the hd homerun again and return me to the guide, press play again and after a few seconds exactly the same.
This is the message I get for a split second after the picture freezes and I am returned to the guide
Suprisingly the fix for this seems to be setting decoding to hardware which stops the no hdhomerun message but obviously comes with other issues on some channels!
It seems to be that the HD channels which are unable to play in hardware decoding play fine with this new issue, but the SD channels which are able to play fine under hardware decoding now suffer with this new no hdhomerun detected issue.