Audio interference

Jul 1, 2018
Hey guys. Quick question: has anyone encountered a interference noise when playing music from the phone to a auxiliar cable( in this case, streaming from the phone to the car) ?
If so, did you manage to fix it? How?
I'm using the adapter that came in the box, and the latest rom update, 8.6.28
The device is a Mi 8, and yes, I've tried different aux cables, and settings on the headphones&audio settings.
On the Chinese beta, this problem was also there.
I've also tried with the viper4android magisk module, but still no luck.
Strange enough, playing music on normal headphones, doesn't have no interference.
In case anyone wondering, the vehicle is a BMW, and I also tried removing the antenna of the car, still the same...

Thanks a lot in advance

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