When I watch video in a browser such as youtube it is OK for 1-2 minutes then gets jumpy for about 30 secs and restarts. Task Manager shows that jumpy video coincides with CPU usage jumping to 100%, but I cannot see any application or Process causing this jump. Happens with Firefox and Chrome.
At 3 Mbs, I assume that is the Maximum speed, which is rather slow for Video watching, escecially if the video's are in a High defination format.
DVD's are a different subject as they run via the Processor & graphic card and do not rely on an external source.
It seems that the automatic quality control ( adjust video input to match your computer) has been upgraded and you now have to set it yourself.