UPDATE: I tried out my old Galaxy S7 again for about 24 hours. Took and made calls in car. Listened to stored and streamed audio in car and with headphones. All were bluetooth connections and while connected to my watch the entire time. Worked beautifully. No stuttering, no disconnections from BT, no need to disconnect my watch. Just the way I remembered it. I was told during BT calls that I sounded louder and better.
I then put the sim card back in my Teracube. Because of the way that my watch connects to phones, it had to be a new install of the watch back on the Teracube. The other change I made was to delete the Samsung’s SmartThings app. It was a holdover from my when I first switched to the Teracube and was reinstalled from backup. I never set it up for the Teracube, but it is made to impact BT connections. Before this experiment I had reset all of app preferences as suggested and had an improvement. My logic was that getting rid of SmartThings eliminates a possible complicating factor. At this point, only 2 Samsung apps remain on my Teracube, as both are needed for my watch to connect.
First use - put in BT headphones for 7 minute walk to my car after work. Streamed iHeart radio. Perfect. Got to car, and it did not auto connect to my car. Turned off/on BT, and it connected perfectly. Drove 26 minutes while streaming iHeart. Perfect. Received call, and it routed to my car as expected while my watch remained connected. End of call, auto switched back to music. I called my wife and everything worked as expected. By that point, I’m thinking I got this fixed
Stopped at store to pick something up. Got back in, auto connected and played. Started to stutter but never d/c’d BT. Stutters were very short and less often, about once every 5-10 minutes. Switched to Amazon Prime music stored on device, and it stuttered in the same new way. Made call - perfect. Made another stop. Auto reconnect and play with similar stuttering. Switched to Amazon Prime music streaming - no change. Switched to Libby audiobook stored on device - no probems. Maybe my problem is Amazon Prime? Later streamed news from Google over headphones - perfect. That was all yesterday.
Today, tried YouTube music streaming - stuttered exactly once. Made a call - perfect.
From yesterday through today, the watch has not been an issue. It either stayed connected during calls or d/c to allow call through to car and auto reconnected to music after call was over. Calls in my car appear fixed for now. Watch has not been an issue. Streaming audio has worked better than stored audio. Stuttering that occurs has been brief and connection to car has been more stable - I recall it only d/c one time in the car and reconnected very quickly (big improvement from before).
From the beginning, here is what has been the most helpful.
1)Resetting all app preferences.
2)Removing unneeded Samsung software that can affect BT connection.
3)Unclear if “new” install of watch software conclusively helped, but there was improvement.
Thoughts? I beginning to think it may be more of a software problem than hardware. The next step is to d/c watch and remove all Samsung apps from phone to see how stable things are with only BT connections to car and headphones. Maybe Samung software does not play well on a vanilla Google device. This would explain why it all worked perfectly with my S7. More later…