I also get the random freeze during streaming outside my router (home to office).
Does anyone know how to get Firefox to refresh maybe every 15 seconds. . .if I could do that. . . it would essentially solve the problem as a work-around.
I've found a URL Refresher for free HERE
It's a little annoying to see the 'eyeball' logo pop up on each refresh, but it will keep the stream going without attendance.