Netflix can expect big demand for the Chiefs-Steelers game and the Texans-Ravens contest that follows on Christmas. Friday’s boxing issues have raised red flags as the Athletic’s Richard Deitsch noted in a story about the streaming giant.

Many viewers had their screens freeze or endlessly buffer, with some crashes reported as well. The 60 million who tuned in were an all-time high for the service. In a note to employees, Netflix Chief Technology Officer Elizabeth Stone admitted that there were problems.