Regarding the time for changing channels, I doubt it's anywhere near instantaneous on cable's true digital channels, only the analog ones. Any digital service is going to have a lag time of acquiring the signal, decoding it, and building the stream for the output device.
Regardless, that's what the Guide button is for. You might find it less irritating to be able to surf the guide while leaving the current program undisturbed, then only actually change the channel when you find something worth changing to.
Regardless, that's what the Guide button is for. You might find it less irritating to be able to surf the guide while leaving the current program undisturbed, then only actually change the channel when you find something worth changing to.