soundbar and Helix

Hello - I am new to Helix TV - I had Bell Fibe in my previous home and had no problems. This HELIX  TV system has been frustrating so far.

We have a soundbar which plugs into out TV - it works perfectly when we watch Netflix of YouTube etc...  When we watch HELIX tv - the soundbar seems to disrupt EVERYTHING.  Pages wont load, blackouts, soudn and display are delayed, recordings don't play... every move is EXTREMELY slow.....

As soon as we unplug it - everything is fine. 

Why?  How can we watch HELIX TV with our soundbar on? 

Thanks for any help you can provide.