what model TV? does it have the latest firmware?
Does it have multiple HDMI ports?
Are you trying to switch HDMI cables without turning everything off and back on?
Does your tv have an HDMI ARC/ CEC port?
What or why are you trying to loop thru so much stuff?
I have a similar problem. I have the audio runing thru an optic cable to my sound system. I put the device setting on HDMI and it works great, But them sometimes the sound goes away when I change channels and when I go back to the device settings menu it only has Dolby DIgital, Stereo and PCM. The HDMI option has vanished. And suggestions?
With the HDMI output used I found the optical output muted. I had to use component cables to my TV so that I would have my good 5.1 audio. Then I changed my amp to a Denon with multiple HDMI inputs and one output. The Denon switches devices to the TV and cleaned up the cabling mess behind the entertainment center. The Denon also has the ability to set an audio delay on each input. Easiest way to set the delay is watching golf at the tee box. I hated hearing the "whack" during the back swing!
Now if they could get their switching to handle the Dolby stream so that it does not drop at the switch points on local spots causing a mute until a valid Dolby stream is decoded again.