Setup: Actiontec Rev I Router: 50 foot Cat5 cable to Roku XDS device. Speed test always indicates 50MBS download speed.
Netflix streaming has always worked but quality level varies and rebuffering and downgrading usually occurs. I'm often able to start out with 4 dots (highest streaming rate and quality) but often rebuffer and downgrade to 3 or 2 dots. With Roku set to debug, the stream speed is dropping when this occurs.
Amazon seems fine or, at least, much better.
I assigned the Static DNS address recommended by Roku. No help.
Any ideas?