I currently have a Nexus 6P. It was the flagship before the Pixel series. I use Bluetooth headphones daily on my commute using the Philly subway system (SEPTA). In center city and around suburban station I experience sound cutting in and out all the time on two different wireless bluetooth headphones. It seems to work just fine in my apartment when I don't need it but is never reliable when there's a ton of other sig…
What headphones do you have? I've found that your experience varies wildly depending on your headset. Can you try a different set of Bluetooth headphones and report back?
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They work just fine at the gym, at home, and at work but when in a crowded public space the cutting in/out is consistent.