Ads way too loud on free dive

I had the same problem & found that turning on the “Smart Sound Mode” in my tv settings fixed the issue. It might also be called Auto Sound, Sound Leveler, etc., depending on your tv. I realized it was a tv setting issue because the commercial volume was loud on only one of three Fire Sticks. When I swapped the sticks between tvs, the same tv was loud while the others were still normal.

I cannot believe Amazon is so dumb to play IMDb commercials so loud. It's illegal according to the CALM Act (Commercial Advertisement Loudness MitigationAct (H.R. 1084/S. 2847)) and it turns consumers off. I guess that too few people complain about it for them to care.

It's not just iMdB -- Hulu subscribers are making the same complaint. I myself quit Hulu when they increased the number of ads, along with their loudness. 
https://community.hulu.com/s/question/0D51L00005iNodNSAS/why-are-commercials-so-much-louder