Recently moved "up" to a 7 plus after being fed up of the mess that Nokia have made of the Nokia 6 updates in the UK.
I am struggling with the same issue with this phone when connected up to my car's audio.
If I listen to an audiobook, music etc then I get audio dropouts for a very short time, not even a second but enough to make it difficult to listen to.
I have tried switching off scanning and turning off battery optimisation as advised when searched for the issue and spoke to google tech (he he) but this has done nothing.
Ye, I have the exact same problem.
It did however solve itself when i upgraded to DP3.
But now when I upgraded again to DP4 the problem returned. it is extremely annoying.