I've noticed an issue recently with a few of my wireless devices when trying to watch live or recorded TV from the (hardwired) Tablo. I get "waves" of buffering intermittently on my Fire Tablet and my Ubuntu (Firefox) laptop, but not on my Android phone. I also have noticed intermittent buffering on my Fire TV stick, but not on my hardwired Fire TV (granted, I don't use that one often enough to definitely say it isn't affected). However, the issues on the Fire TV products are fleeting in comparison to the Fire Tablet and the laptop.
Usually, I can watch a program for an extended period of time without issue, and then a wave of buffering will start, and the program is unwatchable for 5-30 minutes. It will play the video in 5-60 second chunks, and then pause to buffer, usually for 15-120 seconds, before playing another chunk of video. Originally I thought it was an antenna issue, but the signal is crystal clear, and there is no evidence of macroblocking or any other signal degradation. Further, I can turn on the exact same channel on my phone and get a perfectly fine transmission.
This issue didn't happen prior to the last firmware update, so I believe it is something that has broken in that update. I originally thought that my 5 year old router may be the culprit, but I would think that a router issue would cause problems with all of my wireless devices, not just the tablet and the laptop. Anybody experience something similar?