I have not been able to force the error to occur but it seems to happen more often when the workstation returns to operation after sleeping. For those events, Strawberry begins streaming and then a short time later (a minute or two maybe) it stops streaming and displays the error.

For what it's worth, my internet connection is gigabit symmetrical.

If there is a more appropriate venue for me to report these incidents please let me know. Strawberry is a great music player, I've donated to the project.