This is part of the mystery, as 99.9% of my remote commands respond within 1-2 sec, but the native on HDMI resolution change of 6+ secs really bugs me.
For the most part my HR24s respond within 1-2 seconds but as quick as that sounds it is pretty slow when navigating around.
Channel change time is pretty slow but since I rarely channel surf I don't notice it much.
Usually I'm ok with the 'speed' of the HR24s although they are clearly not as quick as I'd like or as quick as Dish Network receivers. The HR21/22/23 on the other hand will never be allowed in my house! Those are 'unacceptably' slow.
I'd be willing to accept 'something in my setup' but it's not all that complicated and several neighbors, BestBuy and a couple of local dealers don't have any faster response than I do. I'm pretty sure that the difference between my setup and your setup speed is me and you. You're probably much more patient than I am.... I would however volunteer to test your HR44 for 6 or 7 months at my house. Do you need my address for FedEx?