I sort of decided to try more streaming of actual TV programs through my 5-years-old Roku LT to see whether they look better than through Comcast. The Fox Now app definitely looks better Fox shows on KTVU, which is not surprising, since KTVU is severely bit-starved. WatchESPN isn't better than ESPN/ESPN2, which is also not surprising, since ESPN/ESPN2 have very high bitrates. And at 30 fps on the app, the news scroller at the bottom suffers from a lot of jitter. Fox Sports Go is better than FS1, as I previously noted.
However, despite the potential better picture of streaming apps, among the three I've downloaded, none of them seem to offer 5.1 DD. Is that generally the case with all TV network streaming apps? Or maybe is it a function of my older Roku being detected and being given just stereo sound. My settings do allow for DD sound, so that's not the culprit.
Also, I know that MLB games streamed can be 60 fps, but do TV apps tend to be just 30 fps?