No, not typical. However it is not unheard of, particularly on the video channels that do not have a robust server system and Midnight Pulp is, I believe, one of those.
By being wired you have eliminated a good number of the local glitches that can cause problems but it does nothing to reduce the variances and various slowdowns that exist out in the internet.
You might try a different DNS in your router but, in cases like this, a change of DNS is not real likely to help. Some DNSs to try if you want are:
OpenDNS ( 188.8.131.52 )
Google DNS ( 184.108.40.206 )
Level3 DNS ( 220.127.116.11 )
The stability of a given stream is affected by many things and there are only a few that you can have any effect on.
The main chs like Amazon, Netflix and Vudu have a robust server system that can serve to mitigate many of the problems but even they are no immune to some problems from time to time.