Originally Posted by DoctorOhh
Running speedtest doesn't inform you if your throughput to Netflix's CDN for their adaptive streaming is OK. I believe Reddice as stated that his PS3 works fine during these time which means his general connection to the internet is fine, but I don't believe the PS3 connects to Netflix's adaptive streaming CDN.
That said I never have any trouble streaming Netflix on my Roku 3. PQ is always excellent.
If he's using wireless the PS3 doesn't have the same radio as the Roku. I said that it was a sanity test--if the Roku can't get decent throughput to some close by test server then it probably can't get it to Netflix's servers either. Until Netflix gives us some kind of specific-to-their-servers connectivity test (which they actually have in the latest iteration of the PS3's UI, though it doesn't test speed) we don't have much of anything else.
I've watched what happens in terms of network connections when you start streaming something from Netflix (using my router's connection monitor) and it opens up a bunch of connections on several servers; it gradually drops the connections until it's apparently streaming content from one or two servers and exchanging a trickle of information with one other server. If your ISP is set up for Netflix Open Connect CDN access most of those servers will be in one of Netflix's domains (nflxvideo.net, nflximg.com, netflix.com); if not, they'll be in some combination of one or more commercial CDNs: Limelight, Level 3, Akamai with the "trickle" server generally being in Amazon's Cloudfront CDN (I think that server sets up and brokers connections with servers from which content is streamed). This holds true for the PS3 as well as all my other devices (Xbox 360, Panasonic and Sony BDPs, TiVo Premiere, Roku 2 & 3, WD TV Live and this PC); the PS3 doesn't do anything noticeably different.
Whether they're servers in Netflix's Open Connect CDN or some commercial CDN, I think that different servers have content specific to different devices, so the PS3 may get assigned different streaming servers than the Roku 3. I don't understand why this is; it seems to me that all modern adaptive bit rate streamers should be able to use the same set of files, but Netflix has stated, in a tech blog entry, that they generate some 120 downloadables for every title. Some of those are for "legacy" devices that aren't adaptive bit rate (like first gen Rokus) but some are video encode sets for ABS players on different devices. The Roku might be connecting to different servers which are busier on a per server basis than those the PS3 gets assigned, or maybe they're just physically further away. Who knows?