S95 audio ‘soundbar +TV’ keeps changing

[Sargan]

My TV has Q800, sub bass and rear speakers 

I have Audio set to be ‘TV + Soundbar’

If you move remote volume button up or down it would display ‘TV + Soundbar’

Frequently it changes to soundbar only or TV only … and I have to go back in and set up.

Raised it with Samsung .. but no response.

Today it’s changed to ‘Q Symphony’ something I could not get to show as ‘set’ previously, even though Q Symphony chosen in settings.

Why would this change ? … has there been a s/w update.?

[Obsydian]

It's a Soundbar switching thing, for me it's Sky related, but manifest itself as momentary audio drop outs.