polk soundbar 5000 bluetooth disconnection

Hi. I have polk soundbar 5000, i pair it with Macbook pro 2015. And soundbar loses connection every 15-20 min (rarely it can work few hour). Before disconnection sub shows red light and then soundbar shut down.
i tried to setup all settings on macbook but it does not help.
Do you have any solutions?
Ps: I tried to change the distance between them from 3 to 1m, also i tried in another room, but nothing.
Thanks.