That's a really good point. Broadcast TV in Canada/USA is ATSC, basically Mpeg streams at 1080i or 720p for the most part. The 1080i in particular will be stressful on a playback system, as it requires "de-interlacing", which seems to be more hardware/software intensive than mere "decoding" of 1080p video.

I imagine that so long as the platform is running WMC, it'll probably be fine, but I have no experience whatsoever with that software.

Cheers