HD loads sower than regular, and high speed internet will definitely get you better results. From the time I purchase a rental on TV, it takes about 30 seconds before I can start watching it. That's in HD using Shaw High Speed.
I am a human being; not a tool for advertisers.
No issues with HD or standard def, and i am using TekSaavy and an Apple TV. Make sure that there isn't and hardcore downloading happening on other devices on the network at the same time and you should be ok.
Main differences i noticed between Rogers and Teksaavy is that if you have a lot of network activity the bandwidth does not get spread around very well. I.E. running Skype video chat on the laptop and having multiple downloads running on the desk top....in that situation the ATV my struggle with an HD movie.
Never an issue with Rogers, that line handled whatever i threw at it. (as long as i kept the upload speeds reasonable)
Location: Markham - Soon to be Mississauga, Ontario
You didn't mention did you get the DSL or cable version from Teksavvy? What package did you get?
Personally I think Rogers may be "throttling" the use of Netflix or Apple TV movie purchase, imho. It shouldn't take 30 minutes to stream a movie before you can watch it. I have experienced the same thing. And after only a couple of movies I got the message from Rogers saying you are close to your 25GB limit. Just not possible sorry. Yet you can watch as many movies as you want from Rogers on Demand and there is never a delay.