Volume is dropping down

[Android Central Question]

Hey guys, I have an audio issue on my 1 month old Honor 20. I don't know when exactly this issue appeared, but I didn't notice it first few weeks after getting the phone.
So the problem is that when I'm watching videos on Facebook, YouTube, or an internet browser ( without headphones ), the media volume suddenly drops down after a few seconds although the volume bar doesn't appear on the screen and also the volume bar is kept at the same level. After quiting an app or switching to another video it backs to normal, but after a few secs the volume drops down again.
Does anybody know how to fix this? Any tip would be very appreciated as I'm getting very upset about this.
Thank you

 

[mustang7757]

I found a video solving similar issue on different phone. I'm very surprised. I disabled some function in developer settings and it looks like the issue is pretty much gone.
However thank you so much for help

That's great, your welcome!

 

[B. Diddy]

Hope the problem stays away! What Developer Options did you disable? Were they options you had turned on at some point, or were they on by default?