Good to hear. I have a very, very slight judder every once in a while. It's really only noticeable when watching a channel with text crawling on the bottom of the page. You can notice a hiccup in the text, but it happens infrequently, and not often enough to see in normal viewing.
I would get bad stuttering if the CC4C machine's screen went to sleep. Since I'm running it headless, I just set the screen to never sleep, and never have a screensaver.