I've found that the bluetooth on the galaxy active is poor. I can wear the watch on my left arm, and use my bluetooth buds and they start breaking up after 20 mins of running. Wind can break the connection of my music too.
I'm streaming downloaded music from spotify to my watch. I've tried my bluetooth buds with my phone outside and it's perfect so I know it's the watch.
I guess it's just how it is and there's no fix, but really disappointed.