After updating to IOS 15 the volume on my Sony SRS speaker keeps lowering once the bass comes in on a song. I uninstalled/reinstalled the app and turned off multiple settings in my iPhone and Spotify. Nothing worked until I disabled Spotifys equalizer. Now the speakers volume doesn’t magically lower anymore but the bass sucks with my equalizer settings turned off. I’ve never had this issue in my years using Spotify and it’s extremely frustrating. Maybe it’s an IOS 15 issue but that doesn’t explain why it would start now and why disabling the Spotifys equalizer fixes it.