@tmm1 latest test flight build installed (I think it was the second one uploaded today) when I try to tune into Monday night football on ESPN via TVE. The channels app crashes. I repeated this about 5 times and then submitted diagnostics. Seems to happen when refresh switching happens. I saw the game for about 1 second, then it tries to change the refresh rate to 59.97. That's when it crashes.
I went back to the build from yesterday (2 builds ago) and am watching the game fine now...