I’m having this same issue. I have a gigibit connection at home and all Premium Videos, even the low quality versions, take forever to load on Apple TV and iPhone. When they do finally load it will only play for a few seconds and then go back to loading.
Drew I wish you all the best. I find you to be a genuinely inspiring, interesting and kind hearted person. You're the reason I have so many of my current interests, especially Formula One, and for this I say Thank You. I will follow you where ever your journeys may take you. Godspeed.