Hi there,
Due to some reason, my Roku tv tries to reach it's logging server 3 times more than any of our smart devices. Since, I started blocking these requests an interesting thing happened.
Before when we tried to open the Hulu app we would have to log in ~80% of the time and our requests failed ~60% of the time leading us to have to try again. Now that the Pi Hole is blocking the logging server we've never had to login and the Tv works noticeably faster. I'm super happy with the setup.
Regards.