My Roku LT is malfunctioning when playing on demand programs:
1. If often stalls and replays during commercail breaks, and occasionally during programs.
2. During on demand programs, the device oftens resets itself.
3. All three of our Roku remotes often perform slowly or not at all.
Thanks!
Roku has used LT on three different models: 2400, 2450 and the new 4662. Which model do you have? If it's one of the first two, those are extremely old and no longer supported by Roku. And from your description I think it might be one of those two.
If yours is a 2400/2450, it's really time for an upgrade. Those don't even support 1080.