Carplay works great for the first few minutes then audio starts getting a bunch of static. Music or Phone call does the same thing. A quick unplug replug makes the issue go away for a few minutes then it starts again.
I'm hearing that on Podcasts in iOS 14. If I switch audio to my MFi hearing aids, it clears up. Seems to be an iOS 14.0 bug of some sort, we'll see if it's improved in the updates.