It seems the week one impressions were less than positive, those that forked over the $350 subscription fee unable to view the early slate of opening games. For some, video quality ranged from stuttering to unwatchable. For others, the app simply froze with no means of exit short of killing power to the system. How convenient. Afternoon games were reportedly better in terms of performance.
Sony will be issuing a $24.99 voucher to users who experienced the outage (i.e., everyone who subscribed) so it would seem likely the problem was on their end. However, users of Sunday Ticket to Go, the mobile/pad version of the service, also went through the same freezing and general quality issues.
Sounds more like a Direct TV problem in the end.