Music cutting out every second or two.

I bought Soundcore Life A1 headphones and paired them with a Garmin Forerunner 255 Music. The music plays without issues for about 20 minutes, but then it starts cutting out every one or two seconds. Incredibly annoying. When I turn the headphones off and back on, I get another 20 minutes of peace, but then the problem returns. Removing previous headphones from the paired list and restarting the watch didn't help. The same headphones don't have this issue with a phone, so it seems to be a problem with the watch. With my previous Adidas RPD01 headphones, the watch worked fine. Do you have any ideas what could be the cause and solution to this problem?