I watched all of Super Bowl 50 on the "CBS Sports" app on my Roku and I enjoyed a wonderfully stable stream for the entire game. Not one re-load/re-buffer. Not one. Great picture, clear sound. I could not be happier with the performance of the CBS Sports app on my Roku today.
And, the fact that there was not one complaint or problem about the stream posted anywhere in this forum during the game speaks volumes.
55" Insignia-Roku 4K TV, 40" Hisense Roku TV, Roku2 XS #13A164000326, R3 #1GJ36A038993, R4 wired to Netgear WND 3700 router, 300 mb TWC broadband (Subscriber- 2019 MLB.TV Premium, 2018-19 NHL.TV, Hulu+, Netflix, Amazon Prime)