Just got my Galaxy buds pro and Galaxy book pro 360. Feeling sad 😥. Both devices seems hate to work each other. It is nothing like as mentioned during the unpacking. When the buds are connected to my phone (S21 ultra), it is not working with the book pro. Somethimes it works. 90% of the time they are behaving like they don't know each other.
Generally with regards to the buds switching, I find they mostly switch when the device connected is not playing audio/media. They'll switch over to my other device when I begin playing something. It's not 100% and I believe its because sometimes there isn't a stable connection to Samsung Cloud. For me it's usually a router issue (have way too many devices connected to my router).