930B Soundbar soundbar intermittently sounds dull

[JMappy]

I recently bought a 930B soundbar and since arriving in the past week when watching content or playing a game randomly every minute or so the sound volume will change completely from the soundbar making it sound very dull, completely changing the sound in the room. 

It often fixes itself within 10 seconds but keeps happening and has occurred in Netflix, while playing Xbox and on BBC iPlayer. Sometimes it can take several minutes to change back to normal output. 

I've tried playing around enabling / disabling the space fit sound, it happens on all the sound modes. 

I am connected over eArc to an LG C1 TV. I didn't have issues with the Sony soundbar I just replaced. 

[Vetri]

Turn off adaptive sound and try something like standard sound more for a while. Restart your soundbar and then switch to sound mode you prefer. This is the kind of thing I did with Q800B and it's settled in now. I only use surround mode because it's very stable with my rear surround speakers

[JMappy]

Thanks Vetri, sadly I'm getting this issue in the standard sound mode too