NBC news app problem

I stream NBC news on my Amazon fire stick is very annoying how I have to play with the volume constantly because it goes up-and-down over and over the volume on Commercials it gets loud and then it goes back down I wish it stays one way through commercial and news shows all the way. Please stream NBC news on the fire stick through commercials and news and youll understand Im talking about, im talking about NBC news not the NBC Regular TV show

Eli Laguna about NBC News: Breaking & US News, v5.9.1