[The fives issue with HDMI]

Hi,

 

I am facing a strange issue with the fives.

I have connected then via hdmi arc and they work beautifuly and give awesome sound.

The moment I use the other hdmi port for playing games or Chromecast then tv display switches off momentarily and then comes back.

This keeps happening till I switch the speakers off. 

So basically I can't play games and watch Chromecast with speakers on.

 

Does any one know if this is a know issue and is there a work around.

 

Thank you