Huawei P8 lite audio cuts out playing spotify through car bluetooth

[pointers3]

Hi, I have been having this trouble since some time ago and I apreciate it if somebody could give me an usefull advice about what to do.

When I start playing spotify through bluetooth in my car, I have no problems in the first 30 minutes but after that, the audio start to cut out every few seconds. 

My mobile phone is a Huawei P8 lite with Android 6.0 (ALE-L21C432B594) and my car player is an Alpine.

Thaank you!! 

[pointers3]

Up!

[pointers3]

UP

[pointers3]

Up

[MrTrogAIR]

Turn off battery optimisation?

[Fvarela]

Same issue here. Any solution?