[thomas.rehberg]

Use the netflix test "fast.com" and see what the routes to Netflix support in the evening, in my case sometimes even less than 12Mbit/s on a 50Mbit/s subscription (which I actually running a claim on with my ISP).

The other lane of limitation is that, because of the DRM decrypting, you can only have SW decoding of the video. This can easily bring your CPU to the limits, in my case higher bitrates (>10Mbit/s) of a 1080p stream are stuttering on a J1900 cpu ... ...that has no problem with any 1080p material when HW decoding applies. 

Fast.com says I have 150 Mbps link, which is what I am paying. Also, CPU usage is 20% on J1900, so no problem there.
I am guessing that the cache is too small, as the video quality never drops to potato, as it should, if the speed is the problem... no? 

Hmm, this is strange. A 150Mbit ISP line is more than enough, and since my ISP has fixed his problem my buffering issues are gone. But not the decoding issues I have: skipping frames all over the place when starting the stream, also later but then not that often. It´s not the SW decoding as with local videos I don´t have any skipping files at any resolution or bitrate. Think I need to look into the decrypting of widevine, as this is the only difference. I can run Youtube and any other unencrypted stream with 1080p without any problem.