Sound bar and wireless sub causing issues with Telus wireless 4K

I have had a lot contact with Telus, and now been working with an escalation manager, and doing testing for over a month with different set ups and different sound bars and it's been frustrating. But still not sure what the answer is to solve the problem and if I need another wifi box that will work better with a LG sound bar?

Is there a telus wifi 4k box that will work and not have issues with a sound bar and bluetooth sub woofer? It's very frustrating continue to have instability with pausing shows or interference with tv.

I have been with Telus for a very long time and don't want to have to switch to try a different provider in order to use my set up. I had a PVR in the same room but it was moved by a telus tech and now connected to my modem in a different room so I don't have any other option to watch tv.

Thank you